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On what basis would they seek to remove tenants please?
Do the tenants have agreements with the Landlords, or is the tenancy agreement with the Local Authority?
Do you have a number we can chat on?
To confirm if the contract is signed between the landlord and tenant then the council can not end or interfere with that contract. They have no locus or standing.
It's a matter between the landlord and tenant.
This is a question and answer site. We can not send formal letters sadly. The site is a general forum for information.