thank you for all replies.
i would need a 15 amp plug with a 15 amp fuse.
the reason would be to improvise a current installation.
picture this;
a 30 amp fuse feeding a two storage heaters, 1.7 and 3.4 kW.
wiring in 4 mm from large heater to small heater.
switched 13 amp fused spurs used.
no simple way of getting new cable to one of the heaters.
not really happy with 13 amp fused spur feeding the 3.4 kW heater, works out around 14 amp. though it all worked for years.
thought a 15 amp plug and socket complete with a 15 amp fuse would be a solution, and leave the 13 amp switched fused spur for the 1.7 kW heater as it is.
have noticed newer 5 amp plugs are now fused, wondered if this was the case with 15 amp plugs nowadays.