Quickguard Mudguards

I've had these for a few weeks and they seem to live up to the marketing: quick and easy to fit, secure, and no rubbing or rattling. A bit expensive compared to other mudguards, but worth it to help keep my ars and feet dry if I fancy taking out the good bike in the wet. I'll generally use my winter bike on really wet and mucky days, but for showery summer rides these will be perfect.

https://www.bicyclequickguard.co.uk/

Definitely worth considering over SKS Race Blades and Crud Catchers if you're looking for guards for bikes with no eyelets or clearance. Make sure you get the V2s as the first edition had flimsy plastic bits instead of metal that the designer had spec'd.