I just received this on their email newsletter:
The Palm Beach is launching a new three course dinner menu from Tuesday 5th May. Three courses and two glasses of house wine for £23.50
If you book before the end of June you will receive a FREE £25 gaming chip per table of two.*
The menu is available Tuesday through to Thursday until midnight and Friday, Saturday before 8.30pm.
*Conditions apply contact reception for details and reservations on 0207 493 6585