Now the CX season's over, it's time to adapt the Uncle John for touring/commuting duties.
How to affix a rear mudguard to a frame with no chainstay bridge:
1) Find old LED plastic mounting bracket;
2) Find small corner brace;
3) Twist end of small corner brace through 90degrees;
4) Find appropriate nut, bolt and spacers and assemble.
There might be a better/neater way of bodging something like that but I don't know it.