Hi all, don't know if you only are interested in UK carriers or not, but if you want some nice leg room fly American.
I didn't pay any more for my ticket than the going price on other airlines at that time.
I had not flown them in many years and it was a nice surprise. The extra room really made a difference. I am tall and was with a toddler and it really helped make the trip more comfortable.
I hear there are one or two more US carriers that are now doing the same.
Hope this helps for anyone that really wants that extra space.