I've been to Signature Restaurant 3-4 times in the last 18 months anda;ways provides the most fantastic value for money food, at Bolton College's Deane Road training restaurant.
Lunch is 3 courses, dinner 4, with reasonable choice on the fixed price menu. Last visit I had Grilled Mackerel, Braised Beef and Strawberry Steamed Sponge and they were all excellent.
You can't compare it to a top class restaurant. It's what it is; a restaurant where front of house and kitchen staff are all youngsters learning their trade. But it delivers great food at low, low prices.