as for as i know and heard when you received letter from visa dep with entry clearance
stamp on passport or with BRP its clearly say about that either 5 year or 10 year route apply on your case . follow the instruction on important letter

My spouse passport made before marriage as her just single name (without surname ) and with her father name . I am having problem to registering her name in uk offices ie Dr etc because no surname or maiden name on passport and Brp. which she holding. My Question is Q1, Can she change her name ...