The registration no. of the hearse is B626MRK and the DS420 limousine is F728GUL.

The motor cycle escort and the trailing Range Rover were from the Special Escort Group of the Metropolitan Police. The red diamond on the windscreen of the motor cycle at the front indicates that it is the head of the convoy. The book "Escorting the Monarch" (author Chris Jagger, publ. Pen-and-Sword) is about this Special Escort Group. It has a paragraph about this event, and describes (pg. 135) that a backup hearse, with motorcycle escort, followed at a 10 minutes' distance.