Steve wrote:
I know that if an electrical connection is to be plastered over it must
be crimped or soldered.

Could someone please provide a link to a suitable joining piece (either
crimp or solder).

My screwfix catalogue seems to only show standard crimp connections.

Any advice on regulations regarding this type of joint would also be
helpful.

Thanks
Steve.

Thanks to all for the advice. I was a little puzzled by Alan's response
but this is Usenet ;-)

I purchased the proper crimping tool, as recommended, the blue joiners
and heatshrink from my local Screwfix.

I did a practice crimp on a bit of scrap cable and was very impressed
with the strength and neatness of the joint.

I have now done the connection and all seems well.

Thanks once again.

Steve.