Sorry mate.
look at the UK CAA CAP 413 RT document chapter 4 top of page 6 Item 1.6.4
It seems you don't have to actually report Ready in the UK at all, ATC may ask you to report Ready however.
They certainly don't use the word "fully" anywhere that I can see.
here ya go bud, fill ya fully full boots
http://www.caa.co.uk/docs/33/CAP413.pdf