Yep sink blocked and wash water getting away very very slowly. Look down plug hole and not blocked, outside to check drain in bucket, all good. Crawl underneath and check clear drain hose from bucket to floor entrance looks fine, pull out cutlery draw and bingo, kink in hose where it leaves sink elbow!
I guess over time the hose has worked down a bit through floor causing it to pull it and kink, needs another 90 deg bend but the hose would then hit the cutlery draw.
Pair of vice grips across kink has fixed the problem for now and will fix with a short piece of thick walled hose and saddle to back wall when home after this super long weekend.

I guess over time the hose has worked down a bit through floor causing it to pull it and kink, needs another 90 deg bend but the hose would then hit the cutlery draw.
Pair of vice grips across kink has fixed the problem for now and will fix with a short piece of thick walled hose and saddle to back wall when home after this super long weekend.
