If you are just breaking directly in to the circuit and installing sockets in-line, that should be okay.
But make sure it is the RFC you are breaking in to and not a spur of the RFC.
You can spur only one extra socket outlet (this can be single or double gang) off any one socket outlet on the RFC, so you can not spur again of an unfused spur. You can install a 13A FCU (fused connection unit) in to the RFC and then run as many socket from that as you wish, but will be restricted to a maximum load of 13A on that addition, over all the new socket outlets.
They will be direct in the circuit, Thank you for your time, you have been a great help.
All the best
