Thanks for that Green Hornet.
I hear you, i just thought it was arguable whether the SWA is a circuit in it's own right, or just no more than meter tails effectively.
It could of course be argued that every installation is just ONE circuit seeing as there is a main fuse covering all branches from... :|
I now can't tell what has happened to the gas meter end of that particular main bond, as it's lost behind the new kitchen units, and they would require dismantling to gain access.
The water main bond is also in this area, I have in fact since my first post managed to blindly grab this and pull it, unfortunately i've pulled it clean out, I don't think the kitchen fitters had clamped it on properly. To further complicate things this is in the complete opposite corner of the room to the sink position now, with a large conservatory to go around if I take that route.
Still, you've given me some ideas, cheers Guiness Drink