ED Vaizey is earning as much as the Prime Minister after taking on two second jobs.

Documents filed by the Wantage MP show his new roles at Lion Tree LLC and the International eGames Committee are worth a total £75,000 a year, on top of his £75,000 basic MP salary.

It means he is in line to make £150,000 annually – the same as Theresa May.

According to his register of interests, disclosed as a matter of routine, Mr Vaizey has been earning £4,166 a month from LionTree LLC since December 20.

The consultant role reportedly requires 32 hours of work per month and involves providing ‘general analysis of European telecom, media and technology sector developments’ and hosting events, as well as seminars.

Since January 1, he has also been earning £2,083 a month as chairman of the International eGames Committee, a board established to promote competition in e-sports. It requires about eight hours of work per month, the documents said.

The disclosures come after the appointment of former Chancellor George Osborne as the London Evening Standard’s new editor sparked an uproar, with critics arguing he will not have time to carry out his parliamentary duties fully.

There is already an inquiry by the Committee on Standards, which will look at whether MPs should hold second jobs.

Committee chairman Lord Bew told The Sunday Times that Mr Osborne’s appointment put current rules ‘into rockier waters’.

He added: “We have not ruled out MPs having second jobs, quite deliberately, up until now, but we now have to look again at our rules.”

Mr Osborne’s appointment has sparked calls for an inquiry into whether he broke rules for former ministers by failing to clear the appointment with the Advisory Committee on Business Appointments, which vets new jobs taken by senior public figures.

Mr Vaizey’s appointments to both LionTree LLC and the International eGames Committee were cleared by the advisory committee. The MP also earned £2,350 from media appearances and articles, which he donated to charity.

Of Oxfordshire's other MPs, none declared a second job except Henley MP John Howell who earned £14,000 as a non-executive director of Local Dialogue.