Hi, thanks for the reply.
I have checked everywhere and there doesn't seem to be a leak or any whistling, but just saw a tip online about the maf sensor and unplugging to see if it runs better without the sensor connected and hey presto it does!!
Now when I reconnect it it runs ok, but not as sweet as when you unplug it.
Also when I bought the car the last owner fitted a sports induction kit to it and now the filter is pretty black (which was once red!) so going to replace that first and see if it makes any difference, if not then looks like the maf is at fault and will be replacing that too!!
Any ideas where I could get one cheaper than the Ł218.00 I've been quoted? Anyone??
Thanks for your help tho buddy, I do appreciate that.