HS4000 Kestrel prototype at Cricklewood open day. Jul'69.
Very much an 'odd-one-out' in this batch is Diesel prototype HS4000 Kestrel - being the most powerful diesel loco at that time to have run on BR. It appeared at the BR open day at Cricklewood on 12/7/69. It was sold in 1971 to the USSR railways and finally scrapped in 1993.