Sipsmith do a nice vodka made in an all-copper distillery in a residential area of West London that's particularly nice. My favourite is generally local vodka made in the West of Belarus, but for vodka that's commercially available in the West I like Nemiroff (there's a De Luxe version made more for Western tastes) and Wyborova (Single Estate is lovely).

And yes, Ruski Standard is not bad at all.