Thank you for the replies. The main issue is that there is no power when pulling away and it struggles on hills. I have done all the easy stuff myself, such as full service, new plugs, cleaned the MAF and replaced a binding caliper, but still having issues. It's just a process of elimination at the moment.
I am getting a rattle when pulling away so not sure whether the exhaust has a slight blow near the front. Although if this was the case i can't imagine much power would be lost.
Lift seems to be working fine, it's just the power at low revs. Stop start traffic is a nightmare!