I'm currently looking to buy some new suspension for my civic, at the moment i have got my EG lowered 150mm so i don't really want it any higher, however i want to upgrade to a better set-up. I have a price range of about £1000 (around $2000). Any suggestions?

 

150mm, are you sure that's accurate (almost 6 inches)?

The consensus in the states seems to be a set of Koni yellows (adjustable) with a set of Ground Control coilovers, potentially also having the Konis rebuilt to the "race" or some kind of custom valving. At least in terms of giving the best performance until you get to spending a significantly greater amount of money.

This from the suspension forum has some good shock dyno info on some of the more common stuff:
https://honda-tech.com/zerothread/1104049

And a concise thread from the ITR forum regarding valving:
https://honda-tech.com/zerothread?id=1337124

I'm assuming stuff in the U.K. is priced something to effect where 1000 GBP has a similar buying power to 1000 USD in the states.