I put the sink back in the kitchen today. I had cut the pipes with a view to dropping the sink into the new worktop and reattaching with pushfit.
The bastard at the plumbing merchant had sold me a pushfit straight which only had the collar containing the teeth in one end and dammit I didn't notice.
Put the water back on and #thunk, me with my head under the sink checking for leaks saturated under mains pressure.
This was at 7.45 so ended up dripping wet in B&Q looking like a right ****.
Oh the joys of DIY.