Thanks Guy's
I did the oil change this afternoon and after a bit of research ( and helpful coments here) went for Mobil 1 5w-30 ( which is 20% off at Halfrauds). Its unhelpful that the cars handbook doesnt specify anything more than 5w-30 - not giving the Ford prefered standard or anything more) having always used Mobil 1 in my cars i'm happy with my choice.
I got the filter from my dealer and replaced the factory fitted Ford EFL600 filter with a Fram PH5803. It fits perfectly.
Just one challenge during the whole process - getting the old filter off. I have yet to ever get a filter removal wrench to work and yet again had to resort to the 'screw driver knocked through' method. At least the sump plug was easy to remove.