This change follows a recent increase in terrorist attacks in Lahore.
Staff at the British High Commission in Islamabad and the British Deputy High Commission in Karachi are restricted from travelling to Lahore for all but essential reasons.
There is a high threat from terrorism and sectarian violence throughout the country. Events across the country show that terrorist attacks are continuing. Statements issued by militant groups have threatened more attacks in the coming weeks.
British nationals considering a visit to Pakistan should consult the Foreign Office Pakistan Travel Advice before they travel.