Guy Herbert wrote:
[...] and will call his 'boss' for permission for future dates,.
Please don't, unless you are absolutely sure you are under a real legal obligation to do so. You might warn them - though I wouldn't - but don't give them the impression you think you need their permission when you don't, or they will simply be reinforced in throwing their weight about. The instinct of officials is to restrict any activity that seems untidy or unusual if they can.
You do not need permission unless there is a specific by-law to stop it or you are on private property. Distribution of free literature on the public highway in a political cause or other belief is exempt from the recently-introduced local authority controls under the UK legislation.
This is a different case to liasing with police about a demonstration, where the object of the exercise is to make sure any officers present know what to expect and don't feel there's a danger to public order that they might need to pre-empt.