Travelling in a cramped economy class seat with a broken arm or leg won't be a great start to your trip, so many will be tempted to spend a few pounds upgrading to an extra-legroom seat – just make sure you pick one you'll be allowed to inhabit. Passengers with a broken arm or leg won't be allowed to sit in the roomy emergency exit-row seats – these are reserved for able-bodied travellers who could theoretically help others in the event of an emergency evacuation. Click below to find out more about seats you can book.