Picture posting is enabled for all :)
Several questions come to mind. Is he a tenant you have a reasonable relation with or definitely not? When you've told him before, what has been his reaction? Does he know about the forms you hold, and what they say? Does he realise he may have his tenancy withheld? And I'm glad another committee member saw his actions with you. That helps you a little. Can the committee jointly approach him, if he is on site regularly, and try and get his co-operation by explaining the seriousness of what he is doing, and then making it very clear that however reluctant you all may be, you will have to inform the council if he continues. I don't envy you the situation at all. But presumably he signed some sort of undertaking to abide by rules when he was given an allotment? Let us know how things turn out.
I think you should put up a notice reminding people of the rules and explaining the need. If he still flouts the rules the feeling of guilt should be with him not you. I think you will need a camera, otherwise he might try and denigh that it happened. He is being rather cunning because it will be difficult to take a picture from outside of polytunnel.
Betty, I see you have told this guy about the rules but might it be a good idea to send him a letter saying it has put you/ committee in an awkward situation over him breaking BCC rules and that if it happens again he will be issued with the official BCC letter. You can say you all find this upsetting but you/ committee don't think it fair to all the other plot holders that abide by the rules, then it would be his choice what was going to happen to him.I'm sure lots of us would like to use hoses on our plots but we abide by the rules so why does one plot holder think they don't apply to them I find these people really selfish as it does cause bad feelings especially towards the people that have to uphold the rules.Good luck
The law says I can't drive at 31 mph along my road, park in disabled bays, carry firearms, molest children or mug grannies - it doesn't say anything about "only when anyone's watching".