One of the better reviews I have read on trip advisor
http://www.tripadvisor.co.uk/Restaurant_Review-g186273-d7285931-Reviews-Jimmy_s-Brighton_East_Sussex_England.html
Not been to the Brighton restaurant, but if it is like the Wembley branch it is best avoided. Rows and rows of food all kept warm(ish) under lights.
A restaurant that is Jack of all trades, master of none.