Jo Johnson: Conservative policy chief 'too pro-European' Last year, Mr Johnson in wrote a pamphlet for Business for a New Europe, a lobby group run by the lobbyist Roland Rudd, which argues for continued British membership. He has also written for the Centre for European Reform, a think-tank that is broadly pro-European. In a Guardian article in 2011, he argued that the City of London should be regarded as a "European asset" and warned against "populist pressure on David Cameron to drape the City in a union flag." Mr Johnson's position on Europe is in keeping with David Cameron's call for Britain to remain part of the union, but it is at odds with those MPs who want the Government to take a tougher line on the EU. Bill Cash, the Conservative chairman of the European Scrutiny Committee, said Mr Johnson puts too much faith in the EU. He said: "Jo Johnson is seriously intelligent and well-informed and he understands the European problem very well. But he believes the answers to problems like our trading relationships is the EU, and I do not agree. I have enormous regard for him, but Jo thinks that Europe and the single market are the way to go. I do not and nor do a lot of colleagues. One senior backbencher echoed the concern, saying: "He's extremely bright - no one doubts that. But he's not exactly in the right place on Europe for a lot of us - he's just too pro-European. Boris Johnson joked about his brother's appointment in a Twitter message. Great there is finally a Johnson in Number 10. Jo will be superb," he wrote, adding a reference to his other siblings: " Now for Rachel and Leo." Some Conservative backbenchers raised concern about the background of some of Mr Cameron's appointments. Like Mr Cameron, Mr Johnson attended Eton College and was a member of the elite Bullingdon dining club at Oxford University. Another member of the new policy board, Jesse Norman, is also an Old Etonian. One MP said: "They're good people, but appointing more Etonians doesn't exactly make it harder for Labour to say we're all out-of-touch toffs." Steve Hilton, Mr Cameron's former policy chief, will also have a role on the policy board. He is currently on what was announced as a year-long sabbatical in California. However, he is not expected to return to a full-time role when that year is over.