Friction between regulators Monitor and the Healthcare Commission was growing this week over the former's reluctance to sign up to a concordat designed to reduce the regulatory burden on trusts.

Friction between regulators Monitor and the Healthcare Commission was growing this week over the former's reluctance to sign up to a concordat designed to reduce the regulatory burden on trusts.

Monitor chair Bill Moyes criticised the commission for its persistent attempts to get it to join the concordat which was set up in June 2004.

In the minutes for its March board meeting, released last month, Healthcare Commission chief executive Anna Walker noted Monitor 'remained unwilling' to sign up.

But Mr Moyes hit back saying the decision was something Monitor had 'explained at some lengths'.

'I don't know why the Healthcare Commission feel they want to continue to raise the issue because I don't think even if we were to sign up it would make any particular difference.'

The concordat has 14 signatories, including the Audit Commission and General Medical Council, and six co-signatories, including the Department of Health. It aims to remove overlap and duplication in inspection, audit and review.

Mr Moyes said he was worried that trusts subject to a Monitor intervention would be able to use the concordat to 'fend' it off.