Sorry if I confused you Cliff.
I'm a big fan of Freesat because I believe it's the future of UK tv due to various future problems that are likely to occur with terrestrial. That said, I always try to be even handed and put both sides as both technologies have advantages and disadvantages.
Like Dave says, from the sounds of things you'll get much better reception with Freesat. Also, on the subject, if you want to reduce the chance of breakup in severe weather, just get a slightly larger dish ie avoid getting a minidish. A 60cm conventional dish should be fine. If a bigger dish worries you visually and money isn't a huge issue, then satelite superstore sell crystal clear polycarbonate dishes although these work out twice as expensive as a conventional dish.
This is a wall with 2 x 85cm clear dishes on it, hardly visible, its the large motorised brackets that show on that instalation.
On a single instalation with a small fixed bracket I doubt you'd see much and a 60cm is sufficient for Freesat alone:
(Photo linked from Satelite Superstore.co uk)
A good LNB never hurts either. I've just bought an 85cm clear dish although for me this was a case of wanting to add other satelites that are FTA in the future and the jump in dish size is small in cost (£10) compared to the cost of buying a bigger dish later when actually adding more. 1 slight word of caution, when going for a larger dish, keep an eye on planning regulations. In most cases you'll be OK but it pays to check 1st.