We will be seeing a play at the Gillian Lynne Theatre in London at the end of March. Could anyone recommend a restaurant for lunch or dinner in that area? We see the play on a Sunday so possibly a good place for a Sunday roast? But we are open to all suggestions.
Here's a post from yesterday that will get you started.
Specifically for Sunday roast;
The Ship Tavern, book the upstairs dining room.
Just keep in mind that most places that serve Sunday roast only serve it starting around noon to 4pm. And they often sell out early. Unless your play is a matinee, you'll probably be finished with plenty of time before the show, so you might want to expand your location.
Regardless, one place I know of that is located fairly close to the theatre is The Bull and Egret, which does serve a Sunday Roast, is a 2 minute walk from the theatre, and has good reviews.
ETA: if you like Indian food, there is a Dishoom in Covent Garden that is really good. They don't take reservations for dinner (although they do for breakfast and lunch), but as you would probably be there relatively early, it shouldn't be an issue.
The Devonshire is under a mile walk, serves gorgeous Guinness, and has lovely food. They age their own beef. The seafood is impeccable.
There's a Dishoom even closer, and Dishoom is to die for.
If you're going for dinner, I really like Shoryu (there are a few locations, including one around the corner from the theatre)- very good ramen, and it's delivered quickly which is key when you have time pressure of a show. For Sunday roast, also around the corner you have the Marlborough Head, which I haven't eaten at since they rebranded from an excellent Belgian beer pub (Lowlander) but the reviews are very good. As Mardee says, just note that Sunday roast is for lunch, not dinner.