If you love steak, I think you'll love this restaurant. Argentinian meat, well cooked, all the normal extras and unlike somewhere like Gaucho, a 'reasonably priced' (only just) wine list and 'reasonably priced' (only just) food. The staff were really friendly ad it was very busy with what I assume were local office types, although a couple of large tables indicated that people thought this was a good enough place to have a special occasion.
Only downside is the slightly cramped interior - the table was a bit of a squeeze for three of us; and the spartan furnishing which, although not a problem in its own right, meant that it was very noisy inside because there was little to absorb any sound. So - up for a fun time with great steak, tick; quiet meal or intimate chat, probably not.
Overall, very good; and as good as any steak place I've been to in London.