UK Landlord Forum / Life

first time ive issued section 21 to a tenant  she has ignored it not vacated the house will not respond with me .
i need to send gas engineer to the house to do gas safety check if she refuses entry to house have i covered    my duty as a landlord

See https://www.landlordforumproject.co.uk/landlord-advice-help/tenants-have-refused-gas-safety-epc-and-now-boiler-maintenance/msg36994 for the advice that was given in a similar situation.

As long as there was a valid Gas Safety Certificate when the section 21 notice was issued, what happens afterwards shouldn't affect the validity of the notice.