LOWER THAN USUAL 4 JET NEAR GATWICK
At about 1100Z today I saw a 4 jet (B747 or A340) at an altitude of about 1500ft (or less) in a position due west of Gatwick at about 10 miles from the field. This wasn't a low approach because the aircraft was tracking about 310 degress and must have been over Dunsfold. it continued on that track at the same altitude and disappeared in the distance.
The aircraft was red and white.
Anyone know what the problem was?