Not yet, it was proposed in march last year but it should go down as a advisory but not enforcable, due to the road/rally constingent and cars and cars conversions who i think had a role to play in making it uninforcable.
Sounds all a little bit silly - airbag lights have been part of our Warrant Of Fitness test for the last ten years... If a vehicle has had airbags/pretensioners removed, it must carry a Motorsport authority card and a sticker on the dashboard warning of the removal. Which, I suppose, is just as silly