Originally Posted by og
...I look like having an arrival into LGW in the afternoon and a departure from LHR about 23 hrs later (ie next day). Is this still classified as a transfer or will I be slugged as a stopover?
Transfer. But if the coupon is open and the airline(s) change the schedule by a few minutes, pushing the stay over the 24hr mark, you might have to pay (I always date borderline coupons).