This page shows the available options for white switches and sockets by Crabtree, Knightsbridge and Schneider Electric.
The finishes include Matt, White Moulded and White Metal.
Schneider Electric
Schneider GU8210PW 1 Gang Blank Plate White Metal
Schneider Electric
Schneider GU8220PW 2 Gang Blank Plate White Metal
Schneider Electric
Schneider GU8410PW 1 Gang Blank Plate White Metal
Schneider Electric
Schneider GU8420PW 2 Gang Blank Plate White Metal