These are beautifully original DH82As with the RAF mandated spin strakes (Canadian Tiger Moths don't have these) and the original blind flying hoods on the rear cockpits. http://www.tigermothtraining.co.uk
The design of the DH82a and the Bü131 are technically only about 2 1/2 years apart , but in many ways the Tiger Moth represents the end of an era, the Bücker the beginning of the next.