>>65585Morgan Arms is still a good option if you really good traditional British food (pretty rare, especially in London pubs).
Otherwise Smith's of Smithfield is really good next to Smithfield market (all meat comes fresh from the market each day) in Farringdon. Downstairs is quite casual dining with a great bar (good choice of beers!), upstairs is the restaurant which features a more sophisticated menu. Avoid the downstairs at lunch time and after 5pm as it's full of city workers, restaurant is better in the evenings when it's more romantic (less business meetings going on).
Christopher's in Covent Garden is also nice to take a lady to without being too indimidating, it says it's an American bar and grill, but don't let that put you off, it's certainly no TGI Fridays, people I've taken there are always impressed, it has a beautiful dining area. Tip: ask if they have a private table rather than being inbetween people.
Also, check out the Southbank Centre for good places to eat in the day and evening, there's the Skylon restaurant in the Royal Festival Hall which is best at night (great romantic lighting, food and views of the river, close to the London Eye) and lots of other good chain restaurants like Canteen, Strada, Ping Pong and Wagamamas in that area which are good in the day or at night.
Other good food pubs worth mentioning are the Queen's Head & Artichoke near Regent's Park (intimate victorian dining room upstairs, pub downstairs) and Somers Town Coffee House (not really a coffee house) between Euston and Kings Cross.