5A plug with three 5A sockets.
The opposite side has a 3 pin BS546 socket, directly in line with the 5A plug.
The pin side has the WG logo, Made In England and Load Not To Exceed 5A, 250V.
Note the two pin socket holes are spaced closer together than the 3 pin equivalents.
This adaptor does not have an internal fuse, since all of the outlets are the same rating, and it can only be plugged into a 5A socket.