Ed Sirett wrote:

Attempts to rewrite the regs based on pleading to special circumstances
are a bit like trying to argue that you can bypass some of the electric
regs "because you're only use lights".

point taken - it was only in response to some comments i'd seen on
here.

So can you point me to an online supplier (with the item i need - brass
rectangular preferably) as the plumbing suppliers within walking
distance were no help.