Luton for airlines is fairly short at best of times .... and the pilots will bang it on the numbers and go for full reverse thrust.
Well, airline pilots are certainly not taught to do that. LTN, at 7000 ft long, has plenty of length for aircraft such as Airbus up to 321, B737/757. In fact with the B757 you can get airborne at max structural weight even in Summer.
The intended touchdown point for medium jets is 1000 ft from the landing threshold, for widebodies it's 1500ft. If some crews "bang it on the numbers" they are risking a close encounter with the runway lip - exactly what the planned touchdown point is intended to avoid.