after 25 yrs of fighting for the duvet and losing i finally broke and bought two singles
Every morning I would wake with no duvet on my side and dh would have it trailing on the floor his side.
Last night was second night with singles, dh had crap sleep cos his duvet fell on floor (lololol) continuously .So he says ,I slept like a baby for once.
he says it's not suitable for single duvet on double bed cos there's no purchase 
as duvet doesn't hang on either side.
thanks for the rant