Just checked the mot history of my GTi, the airbag light has been on since 2011...this doesn't bode well...hope this can be sorted 
Always thought an airbag light was an MOT failure

Advisory only until 20 March 2013
The legal process for changing regulations has taken longer than expected and the bedding in period for the new items has been extended several times.
The latest news from VOSA is that:
The legislation to enable the changes required under Directive 2010/48/EU to the MOT test for Classes 4, 5 & 7, will come into force on 20 March 2013. Plans are now underway to enable the items (added to the inspection manuals in January 2012), which are currently being advised, to become fail items from 20 March 2013 where defects are found.
The latest version of the MOT inspection manual shows the new reasons for failure highlighted
(5 March 2013)
http://www.theaa.com/motoring_advice/car-servicing-repair/mot-changes-2012.html