AFAIK 5/4 in all UK bases going forward. And in general the roster is very stable and one of the main reasons to join FR I suppose.
However you should note that it is possible for the company to change the roster patter in certain circumstances and I believe PIK was Fri-Mon ON Tue-Thu OFF during the winter due to the small size of the base. I don't know if this is possible again next winter. Maybe someone can go into more detail.
Its pretty easy information to find on the net but off the top of my head UK bases are PIK, EDI, Belfast City, NCL, MAN, Liverpool, Leeds, EMA, BHX, STN, LTN, Bristol