What should I do if my neighbour builds on my property?

Check property boundaries: Review your title deeds or land registry documents to confirm ownership.
Talk to your neighbour: Politely raise the issue with them to see if it can be resolved amicably.
Contact a solicitor: Seek legal advice to assess the severity of the encroachment and your rights.
File a claim: If necessary, apply for an injunction or file a claim in court to have the structure removed and seek compensation.
Report to local authorities: Notify your council if the construction violates planning permissions.
The Land Registry offers services to confirm property boundaries. Visit Land Registry Services for more details.