A landlord is facing a situation where a tenant, after being asked to pay overdue rent, has demanded major repairs and sent a legal notice for a substantial sum. The discussion clarifies that tenants cannot claim reimbursement for repairs carried out without the landlord's prior permission. The landlord intends to respond by highlighting the tenant's failure to obtain consent, the suspicious timing of the repair demand, and the lack of evidence for the tenant's claims, while also considering legal defences such as limitation.