Thanks to Londonist's recommendation, dinner last night was at Mother Mash, just off Carnaby Street, and very yummy it was too.
The menu's delightfully simple, but the mix-and-match style means that there's a fair amount of choice, and even us veggies had several options to pick from. Most of my favourite eating spots are oriental, but sometimes you're not in the mood for sushi, and a big plate of sausage and mash is just the ticket - and this was *good* sausage and mash. (The pie and mash was pretty fab too, according to my dining partner.)
And the service? Was great.
When we squelched in out of the rain they were full, but not only were we made to feel really welcome, and looked after while we waited for a table, they even offered to come and fetch us if we'd rather pop into the pub next door for a pint while we waited. As it happens a table came free within a couple of minutes, but the offer was appreciated.
Definitely a candidate for a repeat visit at some point.