I have to lengthen a couple of runs of lighting (1mm & 1.5mm) T&E to
reach a boiler connection block that I have had to move. The runs are
currently clipped to a wall.

Can I crimp and heatshrink wrap the connections and clip securely or
is it required to put it in a box? It's a bit of an awkward place to
get at and a box will be a bit of a pain to squeeze in.

I guess if I have to put it in a box I can simply do the crimping and
wrapping and then put the lot inside a 'choc box'.

--
Chris Green