Likely first stationed in Britain during the reign of Domitian (AD81-96), certainly by the time of Trajan (98). Possibly stationed at Benwell in 175, certainly by 205-208. A tile bearing the unit's stamp found at Wallsend, and the tombstone of a freedman at South Shields do not prove that the ala was ever stationed at either of those places. The unit resided at Benwell until the end of Roman rule in Britain.