BRUSSELS: British Prime Minister David Cameron arrived at an EU summit in Brussels Thursday to find his referendum reform push sidelined by twin crises over Greece and migration.

Rather than a lengthy conversation about the reforms Britain wants, sources expect European leaders to discuss the issue only briefly on Thursday night before agreeing to move to the next stage in the process — technical talks.

Cameron’s plans to recast Britain’s relationship with the European Union before a referendum on leaving the bloc by the end of 2017 have hogged headlines at home since he won last month’s general election.

But for other European countries battling to keep Greece in the eurozone and grappling with an influx of migrants from Middle East and African trouble spots, substantive talks on the issue as a group will have to wait.

Britain has stayed out of the eurozone and is opting out of a controversial program to relocate migrants around the EU.

Many European countries are wary of Cameron’s proposals for reform — French economy minister Emmanuel Macron warned against creating an “EU a la carte” in a BBC interview Wednesday.

Queen Elizabeth II used a state visit to Germany, during which Cameron also held talks with Chancellor Angela Merkel, to warn that “division in Europe is dangerous.”

Cameron said that Thursday and Friday’s summit, the first time the bloc will discuss his reform push collectively, would “kick off a process to work through the substance and to find solutions.”

A senior EU diplomat speaking on condition of anonymity did not believe there was “an enormous appetite to have a big, comprehensive discussion of the British question.”

That is “undoubtedly coming in the second half of the year,” the source added.

Another senior EU official expected British reforms to take up one line in the summit communique.

“They will decide what is the timeframe and how this process should be organized in the four months to come,” the official said.

Cameron’s official spokesman said what mattered was “the substance and that technical work gets under way before the summer.”

Senior EU civil servant Jonathan Faull, a Briton, has already been appointed to lead a taskforce on the British referendum in Brussels.