Whilst the frame has mudguard eyelets, the rear ones are taken up with the torque arm so I looked for an alternative that still offered near full wheel coverage.
I selected a set of Zefal Classic MTB plastic guards that mount on the brake bridges.
The supplied mounting bolts are rather long so I shall replace them in time with a shorter pair.
With all the recent rain they have gotten a good workout and have significantly reduced the road spray.