looked a bit amateurish to start with: the under-floor connections
had
all been done with 'chocolate blocks' for example. However, I've
never
had a problem with any of it.

This doesn't conform to existing regs - nor IMHO has it ever.
Connections
have always been done within some form of enclosure. At least for the
last
50 years - and certainly since PVC cable arrived.


don't "chocolate blocks" (I assume the OP mean "boxes" not "blocks")
count as an enclosure ?
if not ten what else should I use to extend cables ?

thanks
LJ