Has anyone found a good solution for labelling already terminated and installed networking cabling ?

I want to be able to label cables both at their ends and also some of them at other points (so I can know what the various ones running through roof spaces are going to).

Ideally I don't want to label them with just numbers/short codes, I don't really want to be looking up in a spreadsheet to find out that A07 is the office access point...

I use this stuff for cables that are already terminated:

https://www.amazon.com/dp/B003D879W8

Looks interesting. Sadly I can't find anywhere in the UK selling it in sensible pack sizes that actually has any stock expected any time soon.

I use an older version of this Brother P-Touch label printer. The flat/sticky labels it produces are sealed under a clear tape as they are printed, and are quite durable:

https://www.amazon.co.uk/x/dp/B073J26JMP/

I was going to post "I already have a very old label printer, but it is a pain in the arse to use on existing cables, you always end up not overlapping the ends".

And then I thought I'll go and play with the label printer again. Turns out, it has a cable mode. It prints the text twice, with a dotted line between to help you line up the label so the ends line up.

As an aside, Brother has heat shrink labels for the P-Touch. I use those for cables what yet not been terminated.

There ya go! Even with that, I usually take scissors and snip the slightly uneven end after attaching it to the cable. Works a treat!

For retrofitting to cables I use these types of labels:

https://www.canford.co.uk/CABLE-MARKERS-RETROFIT-With-fitting-tools

For putting onto new cabling, I use these:

https://www.canford.co.uk/CABLE-MARKERS-PRE-FIT-Kits

I avoid all adhesive type labels, every time I've used them the adhesive has failed after a few years. However, an ex-colleague recommends these ones if you do want to do it that way:

https://www.canford.co.uk/CABLE-MARKERS-WRITE-ON-TAPE-Laminating

I tend to just stick with numbers for 'work' stuff, as there tends to be schematics and drawings to refer to so you can figure out the actual function of the cable in question.

Re: your comment on using your label maker. Unless you use the right label type, they're likely to fall off in weeks instead of years, in my experience. Although I think the fresher the label stock the better you might fare.

I find the permanent vinyl type adhere quite well, but I'm not sure if all label printers support them. I have a Dymo Rhino 6000 which will pretty much print on anything. The heatshrink stuff they sell was a godsend when I was rewiring the house. But it's expensive and you don't get much in a cartridge.