Luton airport manual can be downloaded at
www.london-luton.co.uk/en/download/395/aerodrome
A380 is Code F
Boeing 747 Code E
Runway 08/26 is Code 4E.
A portion of the Taxiway Alpha is 23 metres wide taxiway at the entrance of the Main Apron and is listed as a variation.
Taxiway Delta is re-designated Code D due to the demise leased by Harrods Aviation and Pier Structure between East and North Aprons. The Taxiway can be used for Code E aircraft under the following conditions:
(i) hangar 202 (Stand 62) is vacated of aircraft to the wing span clearance
(ii) Traffic control lights are activated on service road between East and North Aprons.
(iii) There is no infringement by extension or work in progress to the most eastern point of the pier.
I think that will change when the eastern apron is made 8m wider on either side of the centre line under the master plan allowing the 6 stands to become 8. At the moment it can still handle 747 type aircraft but the plans show a 40.5m code D clearance after the apron is extended.
This would leave only the south stands capable of handling a Code E aircraft.