Ivory Arch (£10 min for delivery)- V. good and No tip expected.
Cafe Nawaz (£12 min for delivery)- V. Good, but expensive compare to Ivory Arch. More so becuase they add card charges.
Simply Indian (£15 min for delivery)- V. Good, if pricey, but they do have the most original menu.
Morley Tandoori (£12 min for delivery) - So so, but freebies often added. However, their delivery driver seems to think a generous tip is a legal entitlement.
Tower Tandoori on Tower Bridge Road is, IMHO, the best Indian restaurant in SE1, and certainly amongst the best in London. Excellent food, great service and speedy delivery of take away orders. Highly, highly recommended.
I would second Boroughblokes recommendation of Café Nawaz
Fantastic food, especially the Café Nawaz special (chicken with mince) which is packed with meat not just a few chunks floating in sauce like some restaurants. The Goan Chicken Curry is also good, especially for people who don't want too much heat, but still plenty of spice and flavour. Their paneer peshwari side is brilliant (very mild and creamy but a lot more flavour than a korma). Tarka Daal not so great.
They always deliver quickly, food is piping hot when it arrives, and friendly staff.
I have no connection to them, just order very regularly :-)
It's also great as a dine-in place too