Exhibit 99.1

Investor Release

Q1 2010 Selected Operating and Financial Results

Continued Triple Play Growth at Unitymedia

Cologne, May 7, 2010 — Unitymedia GmbH (“Unitymedia”), the second largest cable operator in Germany is today providing selected, preliminary unaudited financial and operating information for the three months (“Q”) ended March 31, 2010. Unitymedia is an indirectly owned subsidiary of Liberty Global, Inc. (“Liberty Global”) (NASDAQ: LBTYA, LBTYB and LBTYK). A copy of this press release will be posted to the Unitymedia website (www.unitymedia.de) as well as to the Liberty Global website (www.lgi.com). In addition, Unitymedia’s financial statements with the accompanying notes are expected to be posted to both websites prior to the end of May 2010.

Financial and operating highlights for the quarter ended March 31, 2010 as compared to the results for the same period last year (unless noted) include:

Cable Operating Performance*:

·                  Total RGUs increased 6% to 5.8 million

·                  Quarterly net RGU additions of 92,000 as compared to 88,000

·                  Advanced services subscriptions, consisting of digital cable, internet and telephony, grew by 30% or 618,000 to 2.7 million RGUs

·                  Telephony and internet RGUs increased 49% and 45%, respectively

·                  During Q1 2010, 75% of all new internet additions took Unity3play

·                  Digital penetration increased to 31% from 26%

·                  Both internet and telephony penetration reached 8% of two-way homes passed, up from 6%

Cable Financial Results and Highlights*:

·                  Cable revenue growth of 5% to €228 million, with blended ARPU per customer increasing 7% to €14.68 per customer

·                  Cable Adjusted EBITDA increased 8% to €120 million

·                  Cable Adjusted EBITDA margin increased 170 basis points to 53%

·                  Cable capital expenditures decreased to 22% of cable revenue from 28%

·                  Repaid pre-acquisition capital structure and completed UPC Germany debt pushdown

*    For definitions and reconciliations of certain financial and subscriber metrics please see pages 8-11.

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Unitymedia Operating Statistics Summary

Unitymedia Cable Segment

Note: Minor differences in figures throughout this document are due to rounding. For footnote disclosure please refer to page 10

Subscriber Statistics

Following the acquisition by Liberty Global, we have changed the manner of accounting for our video and internet subscriber base as of Q1 2010. Regarding the video subscriber base, Pay TV RGUs are not accounted for separately but treated as an additional service that a digital cable RGU is subscribing to in addition to the underlying basic cable access service. In addition, a customer subscribing to our basic digital service will be counted as a digital cable subscriber, but not as an analog cable subscriber. Therefore, a customer taking our basic digital cable service as well as one or more Pay TV packages and/or digital video recorder (“DVR”) subscriptions is counted as one digital cable RGU. In terms of our internet RGU base, we are including customers taking retail broadband products (ranging from 2 to 120 MB/s) as

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well as those Multimedia-Anschluss (“MMA”) RGUs, the wholesale 128 KB/s internet product for landlords, which have requested and received a modem that enables the receipt of the service. Prior period figures have been adjusted to conform to the new subscriber policies and further adjustments to our subscriber counting policies are possible in future periods as we continue the integration process with Liberty Global. For more detail and an RGU overview of prior quarters under the revised RGU definition please refer to page 8 of this release.

At March 31, 2010, we had 5.80 million RGUs, reflecting an increase of 6%, as compared to our 5.45 million RGUs at March 31, 2009. The improvement in RGUs was due to growth in our advanced services of digital cable, internet and telephony, which increased 30% from 2.07 million as of March 31, 2009 to 2.69 million as of March 31, 2010. This growth resulted in part from a combination of our high value product offerings and an increased consumer awareness of our triple-play services. Of our total RGUs at Q1 2010, advanced services represented 46%, as compared to 38% in the prior year period.

We finished the three months ended March 31, 2010 with 639,000 and 638,000 internet and telephony RGUs, respectively. As compared to March 31, 2009, our internet RGUs increased by 197,000 or 45% and our telephony RGUs increased by 210,000 or 49%. Our internet growth has been driven primarily by the strong take-up of Unity3play services, which offers the consumer a bundled offering consisting of digital basic cable programming, internet and telephony services. Additionally, the triple-play bundle is fueling our telephony RGU growth, as over 90% of our internet additions in the quarter also subscribed to our telephony service.

Our video subscriber base at March 31, 2010 totaled 4.52 million RGUs, consisting of 3.11 million analog and 1.42 million digital subscribers. Over the last twelve months, our video base declined by 1% or 54,000 RGUs, primarily as a result of previous price increases in our single and multi-user segments. A highlight of the last twelve months has been the addition of 211,000 digital cable RGUs, of which 53,000 were in Q1 2010. This increase has been driven by the ongoing conversion of analog cable subscriptions into digital as well as continued strong take-up of Unity3play. As a result, our digital cable penetration at March 31, 2010 was 31%, up from 26% at March 31, 2009.

At arenaSAT, our subscriber base decreased to 51,000 subscribers at March 31, 2010, from 184,000 at March 31, 2009. This was primarily due to expected churn from Bundesliga subscribers, as the Premiere (now Sky Deutschland) sublicense agreement expired on June 30, 2009.

ARPU per Customer

A key component of our business strategy is to increase the penetration of our advanced services by providing our customers with a compelling value proposition through our bundled product offerings and enhanced digital video functionality and content. As a result, one of our objectives is to increase our ARPU per customer through a combination of migrating our largely single-play analog cable customers to digital video and upselling our customers to our Unity3play services, as customers increasingly recognize the value of our bundled products. As part of our business strategy, we are seeking to accelerate the roll-out of next-generation high-speed internet, using EuroDOCSIS 3.0 technology, as well as high definition television.

In the last twelve months, we have increased our RGUs per customer relationship by 7% to 1.27x at March 31, 2010 from 1.19x at March 31, 2009. Over the same period, our blended ARPU per cable Customer Relationship has increased by 7% to €14.68 for the three months ended March 31, 2010, as compared to €13.69 for the three months ended March 31, 2009.

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Unitymedia Preliminary Unaudited EU-IFRS* Selected Financials

Revenue

For the quarter ended March 31, 2010, cable revenue amounted to €228 million, reflecting an increase of 5%, as compared to €217 million for the quarter ended March 31, 2009. The increase was primarily due to increased revenue from advanced services, as we continued to experience strong demand for our lead consumer product, Unity3play, and to a lesser extent, the positive impact of an increase in our basic cable pricing effective January 1, 2010 for certain multi-user contracts. These were partially offset by the impact of the discontinuation of retailing Bundesliga programming in the digital cable business and basic video subscriber churn resulting in part from previous price increases.

arena generated revenue of €3 million in the quarter ended March 31, 2010, as compared to €80 million in the quarter ended March 31, 2009. The decrease in revenue was primarily due to the discontinuation of Premiere share revenue recognition and sublicense fees from Premiere, as the underlying Bundesliga sublicense agreement with Premiere expired on June 30, 2009, as well as lower subscription revenue.

* International Financial Reporting Standards, as adopted by the European Union (“EU-IFRS”).

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Adjusted EBITDA

As a result of our acquisition by Liberty Global, we have revised our definition of Adjusted EBITDA and current and prior period amounts are presented under the revised definition. For more information, please refer to footnote 14 and page 9 of this release.

For the quarter ended March 31, 2010, Cable Adjusted EBITDA was €120 million, reflecting an increase of 8%, as compared to the quarter ended March 31, 2009. This growth was primarily due to increased take-up of our advanced services and was partially offset by higher costs to service our RGU base, including costs related to interconnection and customer care. In terms of margins, we achieved a Cable Adjusted EBITDA margin of 52.8% in Q1 2010, as compared to 51.1% in Q1 2009. This year-over-year margin improvement was primarily due to lower programming expenses following the discontinuation of Bundesliga programming, the January 1, 2010 price increase in our video business as well as operating leverage inherent in our business.

Capital Expenditures

Capital expenditures for the cable segment decreased from €61 million for the quarter ended March 31, 2009 to €49 million for the quarter ended March 31, 2010, primarily driven by a lower volume of network backbone upgrades. For the quarter ended March 31, 2010, capital expenditures were 22% of cable revenue. As of March 31, 2010, the network was 92% upgraded for two-way services up to the street cabinet, with drops from the street cabinet to the building generally added, and in-home wiring generally upgraded, on an as-needed, success-based basis. In line with our strategy to offer our customers competitive broadband services at very high speeds we plan to have approximately 80% of our two-way homes passed upgraded to EuroDocsis 3.0 standard by the end of 2010.

Capital Resources

The following table details our nominal, consolidated third-party financial debt as of March 31, 2010:

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The following table provides a reconciliation of our consolidated third-party financial debt to the EU-IFRS balance sheet value as of the indicated periods:

March 2010 Refinancing

On November 20, 2009, UPC Germany as part of the acquisition financing for Unitymedia issued:

·                  €1,430 million principal amount of 8.125% senior secured notes due 2017

·                  $845 million principal amount of 8.125% senior secured notes due 2017

·                  €665 million principal amount of 9.625% senior notes due 2019.

In addition, on December 21, 2009, UPC Germany entered into an €80 million secured revolving credit facility agreement. The proceeds from the November 20, 2009 note issuances were used to fund a portion of the purchase price for the Unitymedia acquisition upon closing of the transaction on January 28, 2010. In addition, on March 2, 2010, as part of the debt pushdown to Unitymedia and certain of its operating subsidiaries, the remaining proceeds from the note issuances were used to redeem Unitymedia’s then existing indebtedness, which consisted of the following:

·                  €1,350 million senior secured floating rate notes due 2013 (of which €1,024 million was outstanding);

·                  €235 million 10.125% senior notes due 2015 (and payment of applicable call premium of €12 million);

·                  $151 million 10.375% senior notes due 2015 (and payment of applicable call premium of $8 million);

·                  €215 million 8.75% senior notes due 2015 (and payment of applicable call premium of €9 million); and

·                  €100 million term loan facility.

Additionally, Unitymedia’s existing undrawn €130 million revolving credit facility was cancelled. Accrued interest on Unitymedia’s existing indebtedness of €13 million in the aggregate was also paid. Unitymedia used approximately €198 million of cash on the balance sheet to repay a portion of the above-described existing indebtedness as part of the March 2, 2010 refinancing.

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About Unitymedia

Unitymedia is the second largest cable operator in Germany and an indirectly owned subsidiary of Liberty Global, Inc. We provide analog and digital cable television services as well as internet and telephony services to our customers who reside in our upgraded network area in the federal states of North Rhine-Westphalia and Hesse. Our cable network, which passes approximately 8.8 million homes, is one of the most technically advanced in Europe. In addition to this core business, we operate a digital pay TV satellite platform, arenaSAT, which is part of our arena segment. As of March 31, 2010, Unitymedia had approximately 4.5 million video subscribers, including 1.4 million digital video RGUs, 639,000 internet RGUs and 638,000 telephony RGUs. More information on Unitymedia can be found at http://www.unitymedia.de.

Unitymedia´s ultimate parent, Liberty Global, Inc., is the leading international cable operator offering advanced video, voice and broadband internet services and operating state-of-the-art networks across 14 countries principally located in Europe, Chile, and Australia. Liberty Global’s operations also include significant programming businesses such as Chellomedia in Europe.

Disclaimer

This press release contains forward-looking statements, including our expectations with respect to our strategy and future growth prospects, including our ability to increase ARPU per customer through bundling of advanced services; the timing and impact of our expanded roll-out of advanced products and services, including our next-generation broadband services and advanced digital video features; our insight and expectations regarding competitive and economic factors in our markets; and other information and statements that are not historical fact. These forward-looking statements involve certain risks and uncertainties that could cause actual results to differ materially from those expressed or implied by these statements. These risks and uncertainties include the continued use by subscribers and potential subscribers of our services and their willingness to upgrade to our more advanced offerings, our ability to meet challenges from competition and economic factors, the continued growth in services for digital television at a reasonable cost, the effects of changes in technology and regulation, our ability to achieve expected operational efficiencies and economies of scale, as well as other factors detailed from time to time in Liberty Global’s filings with the Securities and Exchange Commission including Liberty Global’s most recently filed Forms 10-K and 10-Q. These forward-looking statements speak only as of the date of this release. We expressly disclaim any obligation or undertaking to disseminate any updates or revisions to any forward-looking statement contained herein to reflect any change in our expectations with regard thereto or any change in events, conditions or circumstances on which any such statement is based.

The financial information contained herein is preliminary and subject to change. We presently expect to issue our unaudited consolidated financial statements for the three months ended March 31, 2010 prior to the end of May 2010, at which time they will be posted to the investor relations section of the Unitymedia website (www.unitymedia.de) and the investor relations section of the Liberty Global website (www.lgi.com) under the fixed income heading.

Our financial condition and results of operations will be included in Liberty Global’s consolidated financial statements under accounting principles generally accepted in the United States (“U.S. GAAP”) while the financial figures contained in this release are prepared in accordance with EU-IFRS. There are significant differences between the U.S. GAAP and EU-IFRS presentations of our consolidated financial statements.

Contact Details

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Operating Statistics Under Revised RGU Definition

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Key Financial Overview and Reconciliations Under Revised Revenue(13), Depreciation & Amortization, Financial Income(21), Financial Expenses(21) and Adjusted EBITDA Definitions(14)

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Footnotes

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