Uefa have announced a new three-year deal for Champions League rights with Sky and ITV but England’s top clubs face a major drop in their income from the competition if a European ruling goes against them.

The deal for 2012-2015 is understood to be worth €450 million, similar to the current agreement.

But William Gaillard, adviser to Uefa president Michel Platini, said a European Court of Justice (ECJ) case could force a major shake-up in the sale of TV rights across the continent.

Gaillard said: “This may force us to sell the rights on a Europe-wide basis, which would prevent us from identifying individual national TV pools. That will be bad news for clubs in big TV markets such as England.”

The Premier League also fear the case their legal battle against Portsmouth pub landlady Karen Murphy who has used a Greek satellite decoder to screen live matches could affect their TV income.

The European Union’s advocate general Juliane Kokott has already advised that the case means that selling TV rights in separate countries within the EU goes against European law. The case is now being dealt with by the ECJ with a decision expected in the late summer.

At the moment, Uefa splits Champions League payments among the 32 clubs in the group stage, half depending on far they progress and half on the value of their country’s TV deals.

The current €450m deal with Sky and ITV for the UK rights is the biggest in Europe and has seen English clubs earn between €22.5m and €40m annually from the Champions League alone. Beyond 2015, the future is uncertain.

Under the new deal, ITV will have first pick of the match to show live on Tuesday night and highlights, while Sky Sports have the rights to broadcast live all Champions League matches except for the games on ITV. Sky also has the rights for delayed broadcasts and highlights on both nights.

The Irish TV rights deal has yet to be announced for the coming three years.