My flight GLA-LHR-DEN BAH (flight + car) in October was cancelled, well the LHR-DEN sector was, (I noticed on FR24 the flight 2 days before turned back an hour or so over the Atlantic so poss something to do with that?) - Was offered a full cancellation refund or rebook the flight for the next day or at a later date, I opted for the next day meaning I had one day less car hire so I was refunded over £200 for that. Very helpful BA Holidays agent on the phone sorted it admirably.