half penny is a great airfield, I wish I lived closer to have it as my local place.
My advice for half penny is not the most positive, it involves cash and making sure you keep as much as possible of it in your pocket and not the flying schools, it's unfortunate but I now know of more than a couple people that have found themselves with little come back after the school re-invented itself under a new name or closed.
From where I'm sat up at Liverpool as an instructor things are getting much better economy wise, typically if the weather wasn't so bad I could be up dawn to dusk 7 days a week atm so lets hope all schools prosper in 2012
I have a fact sheet on things to watch out for when looking for a PPL just drop me a pm for the link or see the link on my profile page.
happy flying