or try and get a cheap quinny buzz and then a dreami carrycot perhaps.
theres a seller on ebay which is the UK distributer for Quinny and Maxicosi and often the used prams they sell are actually brand new.
http://stores.ebay.co.uk/Babyvalue_Pushchairs- Prams_W0QQcolZ4QQdirZ1QQfsubZ4QQftidZ2QQtZkm
if buying a buzz though try and ensure its the new model which comes with both types of seats.
something like a speedi will also take a carrycot facing either way.
ive got a concord neo which is lovely in pram and seat mode, easy to push and both front and rear facing.