3a FSU downstream of a spur socket from RFC - compliant?

[Rockingit]

Have a 3a FSU that feeds an adjacent WC light and fan, wired from a socket that is a spur. Even though we all know that it's safe (no different to having a 3a plug top in the socket), can't quite make up my mind if it's compliant or not. Thoughts?

 

[timhoward]

If I’m reading it right , why not stick 3A fuse in plug and change FCU for a junction box?