Took the MAF out this morning, cleaned it thoroughly with carb cleaner and then dried it out with a hair drier.
Re-fitted it and it is running smoothly again!
TIP: don't let RAC men spray easy start through your MAF!
Once again, thanks to everyone who has contributed to sorting this one out.
Hope I can do the same for someone else one day.
....crack the duct after the MAF, squirt in, close up and fire it up....
