The British high commissioner in Pakistan has been summoned to Islamabad to discuss David Cameron's inflammatory comments about Pakistan's approach to terrorism.
During a trip to India last week Mr Cameron said Pakistan could not be allowed to "look both ways" and "promote the export of terror".
The comments provoked anger from Pakistan's government and people as insensitive.
Pakistani president Asif Ali Zardari arrived in Europe last night for a meeting with French president Nicolas Sarkozy but had been under pressure to cancel the visit following Mr Cameron's comments.
Mr Zadari is due to arrive in Britain tomorrow to discuss the matter with Mr Cameron, following Downing Street's refusal to issue an apology.