Chrome plated solid tail / unslotted London kitchen sink waste, complete with plug - quite similar to a waste for a Belfast sink (except for the slot).
86mm (3.375 inch) flange. The outlet on this waste has a 1-1/2 inch BSP thread.
We also keep a waste for a Belfast sink. The primary difference between a Belfast and London butler sink is that the Belfast sink features a weir overflow which prevents water from spilling over the sink's edge by draining it away and down into the waste water plumbing.
** BSP thread sizes are measured a special way - have a look at our information page for more details **