looking for an expensive restaurant
There are quite a few diverse, expensive restaurants all located in the centre area. I recommend the Backstreet Bistro at 2 Sturton Street City Centre.
Are there any in the east part of town?
There are a few, if you prefer British food, there is the Grafton Hotel Restaurant, but if you want Indian food, There is one called Pipasha restaurant.
What is the phone number and post code of Pipasha restaurant?
Phone number is 01223 577786 and postcode is C.B 5, 8 P.A. 
Thank you, goodbye.
thank you, goodbye