Thanks everyone. After doing a bit of reading last night as well, I am confident I can tackle this one over the summer.

Thanks for the tip on not using a 3 jaw puller - typically I have about 6 different sizes of those, but don't have any plate style pullers! I bought a bunch when I needed to remove a broken driveshaft from a diff on my old Lotus. I will try and cobble one together from a few parts when I get to that and give myself plenty of time in case I need to order any special tools.

Many thanks

Rich