I have a 2kW space heater. Just noticed that the plug gets quite hot, so I took a look inside.
All perfectly normal. Wires come nicely out of the strain relief, are the right length, and the little screws are all tightly holding the wires in the pins.
Any suggestions as to where the heat's coming from? Don't think it can be the sockets as it's happened in more than one. 2kW is about 8 amps, shouldn't be a problem for a 13A fuse presumably.
Might run it for a bit with the cap off the plug to try and localise the heat source. Unless the pins are not making good contact in the socket for some reason.