I'm sure the DNO has an obligation to make this information available on request
Awhile ago I was on a site where it wss made clear to us that they would not let anyone pull the fuse except for the DNO
This was because on another site an elrctrician had pulled the fuse and dropped and broke the fuse holder, causing 3 hrs downtime while the DNO sent someone with a replacement
WPD sent a guy, nice bloke , he gave me a cutout blank and some seals
I received a feedback request via email, so I praised him up a bit, you know "its nice to be nice"
Saw him 6mths later he was grinning from ear to ear
He told me because of what I'd said he'd got a ÂŁ50 M&S voucher and at his review he got a small payrise!
He also said that it's rare these days for them to be called out to do isolations on domestic or single phase
So I'm guessing they are tolerating the removal of fuses, that is until something goes wrong!