That would obvioulsy be fine if the OP (and his electrician) regarded 20A as being adequate for the likely maximum load on his 6 double sockets. If not, then the alternative would be a ring final circuit with 4mm² cable on a 32A MCB, run in conduit.Radial circuit 4.0mm cable on 20A MCB, run in conduit.
Kind Regards, John.
