I finished the journey, with numerous clutchless gear changes, (only difficulty was traffic lights), and managed to get another 90 deg bend in the end courtesy of a lump hammer and vice at work.
The adjusting rod had enough adjustment in it so I could back the nut off enough to pop the new 90 deg bend through the clevis, secured with tape and drive home

Question is, do they just randomly break? Or is there an underlying problem? The clutch is working fine now, just concerned there is an underlying problem. The pedal has very little slack in the bushes and is working OK.
Andrew