The best way to find out who owns a specific piece of land is to do a search on the Land Registry website. You can use their map search to pinpoint the land you are interested in and download plans and title deeds for a small fee.

Unfortunately the Land Registry is not complete and so you may not be able to find details for some areas of land. You can find out a lot more about some of the gaps in the Land Registry in England on the Who Owns England website. They also provide some great tools and guidance on doing your own land ownership search.