Assume the agent is getting management fee from you and that you also have to use agents contractor (very over priced contractor usually).
Are you in direct contact with tenant?
Immediately bypass useless rip off agent and always speak directly to your tenant.
If your door happens to be non-compliant (ie no safety glass) and the tenant had indeed had such an accident, you can be fined by the local authority for this.
Also if the agent knowingly let the property without safety glass (they must have known this if they conducted viewings and had an inventory done). Then technically the agent is liable and may even have committed an offence as they knowingly proceeded to let the tenant take occupation of an unsafe property. And they should under their duties under the Estate Agency Act have informed you of safety glass issue prior to tenant taking occupation.
They have failed in their duty to you and you should tell them you hold them liable for not informing you and if the tenant takes action (if there really was an accident) then they are liable for failing their duties under the Act.
It all sounds very fishy and the agent is on the make. I bet there hasn't been an accident And the agent is trying to make a few extra quid.
Next week the tenant will no doubt have befallen some other misfortune which needs a repair person to attend (agents favourite over priced contractor).
Speak directly to your tenant and if you can avoid management agreements and only do let only. Never management and rent collection. Ever.
Did you not hear about Foxtons last year?? They charged some poor hapless landlord £538 for changing one lightbulb under a management agreement.
If the tenant really has had an accident, it's best to make contact and offer any assistance you can to avoid issues.
You must have the tenants details. You should have them from the docs from Deposit protection or from their original credit check documentation. Please tell me at least got that information from the agent?