We have an overnight layover (6 pm to 4 pm the next day) at Gatwick and I've booked a B&B in Horley. Check-out time is 10:30 am, however, and I'm looking for ideas of what to do for a few hours before we catch our flight. It would be a Sunday afternoon.
Or should we scrap the B&B reservation and stay/sightsee in London during our layover?