LHR AC at MCO

Just got back from MCO last night and next to the LGW flight was a LHR due out an hour later, anyone know how long the AC been up there/reason for it?

2 reasons for an LHR a/c at MCO:

filling in for an LGW aircraft that is being fitted with UCS

or

operating an extra MAN flight.

G-VFAB has been based at LGW for the last few weeks, maybe, like blythy says, it was this plane?

No def went to Manchester that night.

The LHR based 744 should be operating BGI flights while the LGW400 gets suites.

The BGI flights is being sold to a 44J capacity!