I couldn't find the post... Maybe I imagined it - or perhaps it has just disappeared (as they sometimes do!).
The information you need is on:
General aviation and private jets Southampton Airport | Southampton Airport
Prices are at:
http://www.southamptonairport.com/me...f-use-2016.pdf on page 14 & 15. I don't know what you fly - but at a guess the average 4 seater GA aeroplane would probably be around £32
Last I flew through their airspace they were really nice, and reports from a friend who went there a few months back they were very welcoming and pleasant.
There was talk of overnight parking requiring to use Signature as a handling agent - but - they also offer parking rates - so might be worth chatting to them! (post is:
http://www.pprune.org/private-flying...t-parking.html) but I would call them and ask (if you need it)
This might be useful too (especially for the parking spots...)
NATS | AIS - EGHI