Key tips for Nigerian UK student visa applicants: (1) Use Tier 1 Nigerian banks — GTBank, Zenith, First Bank, Access Bank; (2) Maintain stable balances for 90+ days — avoid recent large deposits; (3) Show clear source of funds — business income, salary, remittances with supporting documentation; (4) Choose UK universities with proven track records for Nigerian CAS issuance; (5) Have a clear career narrative connecting your current background to the UK qualification; (6) Work with a registered OISC adviser. Applying to Russell Group universities has stronger approval rates than newer institutions for Nigerian applicants.