I agree Brian.I too have enquired on the matter.

It appears that TFL dont have a size limit for Prams/Buggies or a definition of what constitutes a very large buggie /pram

It also appears that TFL dont have a proper policy concerning Wheelchairs

and would rather the whole matter goes away.

The matter was broached by one of the Disability associations at a TFL meeting but no satisfactory policy was explained.

So it would appear that all Prams/Buggies can board any bus which has a space for Prams or Buggies.

I find the Hazyness of the TFL guidelines unhelpful to the public and ambiguous to say the least.

But one thing is for sure.Mothers with Very large buggies/Prams need not worry.A tank with a basket on top would seem acceptable.