Yup, got that Auberon... thanks again.
I've done a bit of digging around for a suitable cleaning agent for the MAF and Boost Sensor and it seems as if NON-CHLORONATED and Petroleum free brake cleaner is just about the same in composition as dedicated MAF cleaner... only about 75% cheaper to buy.
Hopefully, cleaning these sensors will do the trick and clear the annoying P0067 error code that seems to crop-up on short stop/start journeys.
I'll take a few pics of the MAF and Boost Sensor prior to cleaning (don't suppose they've ever been accessed in 52k miles), and post them, ASAP.
Thanks again for help and guidance guys... I owe a few of you a beer or two, next time you're UK-side!