Yes, I should have planned ahead and done this in spring for half the price.. but never mind.
Any tips/recommendations/places to avoid for re-gassing? Don't think it's been done for about 3 years, though not noticing any ill effects (climate control still works fine, air is still chilly though not freezing - but it's climate control rather than full on A/C so don't know if that's a side effect of that - maybe takes a bit longer to cool a hot car than it used to?).
Kwik-thingy and F1Autocentre seem cheapest at around 50 quid during this peak season. Also seen a mobile site (wechillanycar) for the same price if there's a need to avoid those two.
Cheers,