Yes the matter is now resolved, thanks .
The vehicle was returned to Algy motors in Southampton who carried out a fault code scan who suggested that the MAF was faulty , I replaced the MAF but this didn't improve matters. I then purchased a hookie copy of Techstream software and cable from Ebay for about £40, plugged it in and checked the balance of short term and long term fuel trims which indicated a vacuum leak somewhere, then used a water misting spray over the engine with it running to locate the vacuum leak which was tracked back to a vacuum hose on the air box - with that fixed and codes cleared everything now running 100%.