Kate and Gerry McCann have joined a list of campaigners who have written to the Prime Minister, David Cameron, urging him to abandon the government’s plans to alter ‘no win, no fee’ legal agreements.

The campaigners, including the McCann’s, have warned the government within the letter that plans to rewrite what are known as conditional fee agreements (CFAs) will ensure that only the rich have access to justice in future.

The letter, which is set to be delivered to the Prime Minister today, ahead of tomorrow’s third reading in the House of Lords of the legal aid, sentencing and punishment of offenders bill, has been coordinated by Hacked Off – the group who campaigned for a public inquiry into the phone hacking scandal.

A spokesperson for Hacked Off, said: “The government suggest they are going to deal with costs reform for privacy and libel cases in the forthcoming defamation bill, because they accept there is a problem.

“In that case they need to remove these sorts of cases from the scope of the current legal aid bill. That would also mean that the Leveson Inquiry can then be allowed to look at this issue as well without having been pre-empted by the government.”

 The Law Society, which represents solicitors, are also opponents to the changes and have warned that it will make it unattractive for lawyers to take up cases and will stop the less well-off from obtaining redress through the courts.