Well he would say that wouldn't he?

I know the RSPCA supported the legislation and admitted last year it doesn't work.

Major's Government had to be seen to do something, so, the then Home Secretary Kenneth Baker drafted the Dangerous Dogs Act with the help of the RSPCA. The Kennel Club's involvement was minimal. Pit Bulls were not a recognised breed in the UK, so it didn't concern them. The Act was rushed through Parliament with minimal debate and, as we all know, the DDA came into being in May 1991. Pit Bulls were effectively illegal and had to be muzzled in public, registered on the Index of Exempted Breeds and microchipped, tattooed and insured. Any PBT or - crucially - Pit Bull 'type' unregistered after November 1991 would be seized and liable to be destroyed under Section 1 of the Act.
link BSL - The dangerous dogs act.

All legislation needs to be thought through properly and dog owners need to be consulted,personally I wouldn't trust the Government or DEFRA.