Originally Posted by
onobond
If no re-booking availabiliy - follow the advice above about leaving the airport.
Agreed.
BA's lounges are quite nice but my own personal tolerance of them is about three hours. Any longer and I'd be climbing the walls with boredom.
If you don't want to take your mum into London, might I suggest a trip to Eton and/or Windsor? It's only a few miles away, and much more sedate with enough to keep you occupied for half a day.