Aluminium Doors Swansea. Are you trying to find aluminium front, back, or side doors in Swansea? MPN Aluminium Swansea aluminium doors are exactly what you are trying to find. For many years now, Aluminium is becoming an increasingly popular choice for doors in the City and County of Swansea extending to the North and South Gower for value quality affordable prices and quotes from local recommended MPN.