Thanks Peter.
A bit more research seems to indicate that a Ford spec Antifreeze is the one that is the same as the Jag one, albeit a lot cheaper than the Jag version. A chat with the previous owner confirmed that this is the stuff that is in there.
Just three days before I got the car he had a slight weep from the Tee Piece that is under the Header Tank repaired, or so we thought...... Weeping there again so back to the local Indy who did it. Should just be a matter of replacing the hose clip but it's a very awkward place to get to. If it was out in the " fresh air " I'd do it myself but it looks like eyes in the fingertips and a quad jointed arm is required so I'll pass on that, my deformities may be extensive but not of that ilk !!!
I'll be using the gift thingy, actually it's a prepaid cash card that British Gas gave me on contract renewal last year, to stock up on stuff from Halfords. The card can be used at other places like Argos, John Lewis etc but there isn't anything I really need, I'm obviously a lucky man or just maybe living the minimalist Yorkshire live like what I did when we lived in a cardboard box on the cobbled steets of Barnsley............