Ooh, must try there, I think I must be quite close to you and @BeaAndBen. Is it one of those counters where you can buy it cold to heat at home or they'll warm it up for you?
I found a great one of those in an off licence near Heathrow airport when I was working there. Amazing food but totally unexpected. I'd gone in to see if I could get a sandwich and some fruit and crisps as I CBA getting changed to eat in the hotel restaurant and I ended up getting vegetable curry, rice and a samosa instead 
My favourite place to eat is Bundobust, also owned by the same people and when we go there, we get a few things, eat some with a beer and take the rest home for lunch the next day.
Usually Chaat, Gobi Manchuria, Palak Kofta, Egg Burji, Paneer Tikka and a Vada Pav. But Prashad also do takeaway so I think we're going to get that next because they do a masala dosa, which Bundo only do very occasionally.
@SiobhanSharpe apologies for the crappy Reach Media link, but I found this about the biggest naan in Birmingham when I was trying to find the name of the big naans you can sometimes get. They sometimes call them family naans, but I've also see them called something funny like sailing ship naan, but can't remember.