If you are absolutely starving in central London and are looking for a reasonably priced restaurant to eat at then this is the perfect choice.
I must admit I was surprised to find the restaurant quite empty but the staff were pleasant enough and the buffet also includes a free half pint of lager. Some would say the choice was limited but remember this is an all you can eat buffet and you have to think about the work that goes into preparing all the different dishes so even though you won't expect 30 different choices of curry, the available selection is absolutely fine. If you are a vegetarian then you will find half the selection suitable for you including a very tasty curry made from a special cheese.
There are some decent starters available including onion bhajis and unlimited poppadoms with a wide range of sauces. The dessert section is perhaps a little too limited but that's not the main reason you go to an Indian buffet.