LONDON — Britain's government insists it wants to help its European neighbours hammer out the details of a fiscal pact aimed at fixing the continent's debt crisis -- even though Prime Minister David Cameron refused to sign up to the accord.

Cameron's office said Thursday that he had called the leaders of Ireland, the Czech Republic, Denmark and Sweden this week, and plans to talk with other counterparts.

Leaders are debating whether the 26 nations expected to agree to the deal can use the European Union's institutions -- such as its Brussels-based executive, or the European Court of Justice -- which are intended to serve all 27 members of the EU bloc.

"We are seeking to engage constructively in that discussion," Cameron's spokesman Steve Field told reporters in London.