Peter Crosland wrote:
I am planning to create a new bathroom in a room directly above the
existing bathroom. I will be connecting the WC to the existing soil
stack. I have looked into the building regs briefly (without calling
them yet) and it seems that you need consent if you are modifying or
creating a new drain. Will what I am doing require building regs?

Yes. Remember that when you come to sell the house as you probably will,
that any buyer is going to ask to see proof of any permissions that were
required. If you don't have them expect delays and costs whilst you get it
all done then. Much quicker and cheaper to do it now.

Don't say that any WERE required.

"been there for years mate..."

I also want to move another toilet about 4 feet away from it's
existing location. Will this require telling the council too? And
does anyone really bother for minor works?

See above.

Peter Crosland