In reply to kathrync:
I was after something similar, but wanted a heap of space for visitors and some kind of privacy for my partner and I. Bought a second hand Outwell Montana 6 polycotton. It's awesome, but if you want quick pitching or compact size it's going to disappoint. After some practice, my partner and I can put our tent up in about 30min. For what it's worth, there's a second hand Montana 4 available now on ebay for around £150. Good little tent, and because it's smaller and lighter, would be a lot easier and quicker to pitch.
The Quechua tent is a good suggestion, although I found them a bit noisy and perhaps less sturdy in high winds. Inflatables vary a lot in terms of quality, but the good ones are excellent.
Ultimately there's always some kind of trade off between expense, ease of putting up, weather-proofing, comfort and noise. Would recommend choosing something with 4000mm hydrostatic head (or more) if used a lot in the UK, and would highly recommend buying a few of these for peace of mind in high winds:
https://deltagroundanchors.co.uk/
I found this site very useful in choosing a tent:
https://www.ukcampsite.co.uk/tents/
Post edited at 12:31