I read quite a few sites and the answer I found is a UK residency. Would anyone kindly tell me if I'm right or wrong?

26 September 1999: went and studied in London - with a student visa issued to a British National (Oversea) passport

26 August 2004: lived and worked in London - with a working holiday visa issued to a British National (Oversea) passport

5 September 2006: live and work in London - with a work permit issued to a British National (Oversea) passport