Queit enjoyment does not trump the landlord's rights so YABU
Hope this helps:
From
www.thetenantsvoice.co.uk
While tenants hold the ultimate authority to control the access of their home, landlords also have a right to enter, as they need access to uphold their responsibilities for repairs and maintenance and scheduled inspections.
Section 11 from the Landlord And Tenant Act 1985 states:
In a lease in which the lessor’s repairing covenant is implied there is also implied a covenant by the lessee that the lessor, or any person authorised by him in writing, may at reasonable times of the day and on giving 24 hours’ notice in writing to the occupier, enter the premises comprised in the lease for the purpose of viewing their condition and state of repair.
This means that unless your landlord or their letting agent has served you with at least 24h notice before they want to come visit, you’re under no obligation to accommodate their wishes and can arbitrarily sever their access to the property.
What is a correct notice for requesting access:
It is served and accepted at least 24 hours before the time of entry
The visit happens at a reasonable time of the day and allows the tenant to be present
Contains details about who will enter the property and for what reason
Respects the tenant’s right of quiet enjoyment of the property
What are legitimate reasons for your landlord’s entry
Move in / Move out inventory – Right at the beginning and right at the end of your tenancy, your landlord or letting agent will need to come in and benchmark the condition of the property. You can request a copy of each report and have a right to accompany the inspection or comment on the report’s statement.
Read more in our dedicated guide – The Tenancy Inventory Check
Requested or scheduled inspection of the property – Your landlord has a right to inspect the property on reasonable intervals throughout the tenancy. This gives them a chance to catch damage and deterioration before it turns into an expensive renovation project. Furthermore, when you request repairs to the property, the landlord must again enter to assess and confirm the issue and take on their repair responsibility.
Repairs and maintenance – Your landlord is responsible to maintain and repair the property after the tenant reports a problem, or an inspection has detected one. To do that however, the landlord will need to go inside the property.
Read more in our dedicated guide – Repairs and Maintenance Of Rented Properties
Allow access to workers for repairs and maintenance – When the landlord needs professional work done in the property, he can authorise workers to come in and do the necessary repairs. They will need access to the property to do their work.
Annual gas safety check – Your landlord is required by law to renew the gas safety certificate by performing an annual check to the gas installation and appliances. The safety check needs to be done by a certified Gas Safe Register engineer. He will need to access the property to perform this check.
Read more in our dedicated guide – Gas Safety – Repair of Rented Properties
Arrange viewings near the agreed end of the tenancy – When you’ve arranged the end of your tenancy, they may want to begin marketing the property to prospective tenants in efforts to miss void months. They will need to access and show the property around. It’s reasonable to expect that the property is in tidy condition for the viewings.