In the UK you can have as many receptacles on a British ring-main as you like, within breaker limits, because every recept has its own 13A or 5A fuse.
Ordinary receptacles (sockets) are not fused, but the plugs are, to protect the appliance cord. This is necessary because ring circuits (and some radial circuits) are protected at 30A fuse or 32A breaker, but an appliance such as a table lamp may need to be protected at 3A.
Only single or double outlets are connected to ring or radial circuits; triple or quad outlets
will have an integral 13A fuse to prevent overloading as they're internally only rated at 13A.
