Hello my name is XXXXX XXXXX I will help you with this. Please note that I am a working Solicitor and may be on and offline as I have to attend Court and meet with clients, even at weekends. As such you may not get an instant response when you reply as this is not an ‘on demand’ live service, but rest assured I will be giving your question my immediate attention upon return. There is no need to wait here, you will get an email when I reply.
Who owns the fence please?
The good news is that he can no do this - this is technically criminal damage
You own it which means permission is needed from you to attach or fix anything to the fence
Can I clarify anything for you about this today please?
You should write and ask that it is removed or you will go to Court.
If he refuses get a Solicitor to write and say the same thing - that may do it
If not sadly you will have to go to Court and ask the Court to Order that he removes it
Does that help?