Thanks for the info.
Unfortunately, mine looks a little different to that, since my mount has a RJ12 H.C connection.
The Blue which has come lose on the RJ12 end was between Yellow and Green on that end but on the RJ45 end it was on the far right.
It's not just a reversal either, as you can see the red is between black and green on the RJ12 end, but between green and yellow on the RJ45 end.
I was hoping it was a 'known' configuration type and I'd be able to buy a quick replacement, rather than having to buy this whole set from FLO to just get the cable.