As ever youngmafbog you talk the greatest nonsense.
I thought the great complaint was that the police were not patrolling the roads as much now that speed cameras were doing their work for them - and the Police are hardly jumping up and down to enforce "hunting with hounds" are they?
Such drivell!
To get back to Looseheads actual question, one of the biggest problems with the original dangerous dogs act was proving that a particular dog was or was not covered by the law. Was it a cross or a part cross etc. It all got very difficult to enforce and although there was an ammendment in 1997 I don't think many politicians will want to hurry to produce dog legislation because of it's association with bad lawmaking.
However I think somebody in Animals and Nature mentioned that in Germany there's a law requiring owners of any dog over a certain size and weight to be licensed
http://www.theanswerbank.co.uk/Animals-and-Nat ure/Question343371.html which might be a way forward but it wouldn't cover bulldogs for example