In article ,
garryb59 writes:

I want to install an external 13amp socket.

I have an older rewireable fuse box so am I forced to buy an
integrated RCD-protected socket? OUCH!!

No. You need an RCD, but it can be indoors. In my case, the
RCD and double pole isolation switch for the outdoor sockets
are both indoors, and thus don't need to be the waterproof
type, only the sockets do. (Actually, I have my outdoor
sockets on a 10mA RCD, but 30mA RCD is acceptable too.)

Do I also need a spured fuse single outlet too, or can I hard wire
directly into the circuit? I can easily get access to the ring main
very near to the position where I want the external socket.

You might as well use a fused double pole switched connection
unit. The fuse isn't mandatory, but it's probably better to
protect the outdoor wiring at 13A rather than 30A. You can get
such units with built-in RCD's too.

--
Andrew Gabriel