Zac Goldsmith and Bob Crow back same campaign
Tories Douglas Carswell, Daniel Hannan and Zac Goldsmith have joined forces with union boss Bob Crow, novelist Fay Weldon and Green leader Caroline Lucas.
They are all backers of a new campaign called The People's Pledge that advocates for a referendum on the UK's membership of the EU.
It wants people to sign up to the following pledge:
"I will only vote at the next election for a candidate who publicly promises to support a binding referendum on our EU membership and to vote for it in the House of Commons."
The PP website lists five "key reasons" we must have a referendum.
1. No one under the age of 54 has had the chance to vote on our relationship with Brussels
2. The EU now makes a majority of the laws we must obey
3. The UK has less than 10 per cent of the votes in the Council of Ministers and the European Parliament
4. The EU is costing Britain more and more money
5. The EU wants to give itself new powers of 'economic governance'
A YouGov poll of 2,436 voters carried out for the campaign found that 61 per cent of voters would support a referendum, against 25 per cent opposing it.
Other backers of The People's Pledge include Labour MPs Keith Vaz, John Cryer, Kelvin Hopkins, Kate Hoey and Austin Mitchell.
The campaign's director is Labour NEC member and former Tribune editor Mark Seddon.
Dods Parliamentary Communications Ltd