Why not try out the Christmas menu at new Chamber Member Bills on London Road. It is £29.95 for three courses and a drink on arrival See the menu here  Christmas 2019_Bill’s Restaurant & Bar

Alternatively they also do the following:

Dinner Set Menu
Sun-Thurs from 5pm
£20.50 for two courses including a glass of wine
£17.50 for two courses without wine

Lunch set menu
2/3 course lunch menu
£12.95/14.95
12-5pm  Monday – Friday