This is not at all an auctionable domain name. You need a specific end user for this. Honestly, I too would like to be proven wrong, but I doubt this would even get bids in auction given the "co.uk" removes any global trade value (even amongst domainers reselling globally).
Reach out to UK estate agent companies, including private resellers etc, and also property development companies too - they could use this as a marketing name.
Value is hard because it depends on the end user as there's no general market value for these keywords really. I'd say it could certainly go for low 4 figures to the right buyer, but do bare in mind co.uk generally are of less value.
I'd also consider seeing if the .uk is locked to you or if not and is available then secure it (imo).