Studies are under way to work out how many are affected - but the figure is thought to be around 137,000 in England and Wales.
Hase-yeeshee, Waxaa socota Daraasad lagu sameynayo arrintan si loo ogaado tirada Haweenka ay saameysay, laakiin waxaa loo maleynayaa inay tiradu gaadhi karto 137 kun marka la isku-daro gobollada England iyo Wales ee waddanka Britain.