That would be an amazing amount.
In the last budget £29bn was allocated for transport. If 10% of that was spent on active transport we'd be spending £30 per head which is about £10 more than the Dutch....we need to catch up as they've been spending a whole load more than we have since the early 70's.
I think 5% of the next budget working its way up to 10% over the next few years is realistic. There is no point in having the money if we haven't the knowledge and infrastructure to build the infrastructure so to speak.