Due to the change in safety standards between the alpha i-size infant car seat, released in 2023 and the earlier model alpha the car seat bases are not interchangeable.

phil&teds do not supply bases for the pre-2023 alpha (R44 European standard), but you may be able to find one through the second hand market. Always ensure any car seat or base you purchase is safe, in perfect working order and has not been involved in any accident.