Thanks guys. I'm just at the weighing up stage at the moment. I'll look into hiring with and without a driver too.
My site is pretty flat with nothing to remove in terms of existing buildings or walls. It's just over 1/2 acre with no access issues or overhanging cables. I've got the following to do:
Footings (between 1.2 and .5m), drainage, RWH tank, soakaways, service trench, quite a large front drive (will be block paving but I will need to get a working surface down as it's clay), paths around the sides of the house, garage concrete slab, rear patio area, about 220m of hedges to plant and site levelling.
My thinking is like ProDave, it would be extremely handy to have on site as and when I need, as this is a 5 year project for me
Also, can a digger happily be used to lift materials up to say first floor level?
What sort of size digger should I be considering (or not considering) for my needs?