I set up the photocopy system with Royal Mail on Wednesday night. I've still not received mail since but I'll go going down to the sorting office tomorrow (Saturday) to check if that is because no mail has arrived or to see if it has been taken from the mailbox.
The post lady puts the mail into the mailbox. I do occasionally receive mail addressed to the landlady, which I store and forward on in a batch, monthly.
The possibility of an individual getting a key cut is an interesting one I'll check later today. There is certainly a sticky note containing the company who fitted the locks phone number and a series of key codes. I have only noticed this when opening the mailbox door to collect mail. I shall see if it is possible to view this with through the mail flap later this evening.
If I do opt for a new lock, something I am becoming keen on (though I do think I'll give Royal Mails system a chance first, to at least highlight if the issue is with the mailbox and not their system), can replacement locks (with associated keys) be purchased off the high street? If so, from where and what sort of cost? If it is easy and cheap I think I'll do it without informing the land lady initially. I can then, when the issue is understood further, inform the land lady of what I have done. When we leave I can give her the option of keeping the new lock or installing the old one for her.
Failing them being easy to purchase and fit, I may call the company that installed the current lock and ask for a quote on that. If it is not too expensive I could just ask for them to refit it, but *not* fit a key code sticker in the mailbox (or at least fit it so low it is not viewable through the flap).
I'll check that tonight and report back. Any comments on how much locks cost, where to purchase and how to fit would be useful.
Thanks!