David Cameron has been reprimanded by a parliamentary committee for using his Commons office to raise funds for the Conservatives.

A report from the Commons standards and privileges committee on Thursday said he had been "ill-advised" to link funding to access to his office.

The complaints focused on a fund-raising body called the Leader's Group which said its aim was "to support David Cameron, providing sustainable and renewable income for the party".

One of the benefits of membership was advertised as "the opportunity to meet with the leader… in his office after prime minister's question time".

The parliamentary standards commissioner said that meeting financial backers in the Commons was not wrong, but that it was wrong for any MP to "employ their parliamentary office as part of a party fund-raising stratagem".

Cameron accepted the recommendation and offered his "unreserved apologies for inadvertently contravening the code of conduct in respect of the use of his parliamentary offices".

He also offered the committee "an assurance that this will not happen again" and said that "no more such lunches for members of the Leader's Group" will take place in his parliamentary office, "nor will his office be mentioned in any promotional literature".

The committee concluded that Cameron "was in our view ill-advised to link directly, in promoting the Leader's Group, the issues of access to his office and party fund-raising".

"We are grateful to Mr Cameron for his speedy and full acceptance of the commissioner's recommendation, and for his apology to the House," said the report.

"We consider that this, and the undertakings he has given in his written evidence to us that he will ensure there is no repetition, adequately dispose of this matter."

A separate report from the committee concluded that parliamentary dining facilities should not be used for party fundraising events.

But a lack of clarity in the guidelines meant that MPs could not be found to have breached the existing rules.

"We believe that political clubs that are engaged in fund-raising for a political party should in future not be allowed the use of House facilities," said the report.