This is a screwless polished brass cooker switch with socket.
It is from the Varilight Dimension screwless range of polished brass sockets and switches. It is a double plate with a red 45 amp cooker switch on one side and a switched socket on the other.
Please remember you will need a deeper back box, as this is a flat screwless cooker switch. We would recommend a 47mm deep back box for installing this plate.