The two yellow diesel/electrics are class 73's:
Network Rail 73212 and 73213 on 6G10- Faversham to Tonbridge Yard GBRf Ballast Train. Saturday 5th July 2008.
The Green Diesel is a class 47851 on a Green Express Railtour
'The Canterbury Tales'
The Maroon class 47 is the leading loco of the tour. 47804. 12th April 2008
The Blue class 47 is Riviera Trains 47843 on 0Z47 driver training run on 9th March 2008.
Ballast trains using class 66 locos at Shepherdswell Mainline July 2006