Can a landlord end a commercial care company lease?

Hello, I rent a house commercially to a private care company under the government-run SEND (Special Educational Needs and Disabilities) contract which began in Oct 2025.

The monthly rent has always been weeks late after written prompts – June/July 2026 rent is unpaid to date.

I’ve had no replies to messages from the tenant. He asked to end the contract in March 2026, I agreed and asked for it be in writing to sign (the tenant wrote the contract out).

I asked again in May for termination paperwork and was willing to backdate to March. Still no paperwork.

Tenant states he was refused planning outright in March and couldn’t appeal. This is untrue as planning appeal is in force to date.

I have made a small court claim thinking it would prompt him but still nothing.

I now want to end the contract as I believe the tenant is in breach of contract.

Any advice would be helpful.

Richard