You could wear a baseball cap right way round under your helmet to keep the sun off your nose and keep the perspiration out of your eyes, and sew on a piece of hanging cloth, French Foreign Legion style, at the back to keep the sun off your neck.

l wear a cotton dress shirt with the collar turned up to meet the helmet, and the cuffs overlap the leather dress gloves I cycle in. Works for me.

BTW, I hold my cotton khakis up with braces so that air can flow through, rather than a belt which would restrict airflow, and wear the shirt outside the trousers to promote airflow.

You'd look a right neddy in that hat George's chum uses, especially in red. A free air ticket to Australia should come with that hat.

I'm so fair that I never tan, my skin only burns. Recently I've had surgery for two melanomas and picked up a valuable tip. One of the surgeons told me that if I wanted all traces of the operation on the back of my hand to disappear, I should rub on Vaseline daily. The Vaseline has also had additional benefits beyond disappearing all traces of the surgery: it has almost eliminated the dried skin spots which are the starting point for melanomas when they harden (and faster if you scratch them off--once they start it is a lose-lose lottery), and the red blotches and brown spots of age have gone, so that my hands look forty years younger. I'm not vain but...

I cycle mostly in non cycling clothing, some of which comes from Rohan who always include the UPF info in the tech spec. 
I also have some arm sleeves like those linked by in4, they're useful in all weathers and save taking long sleeve stuff.

Ive got a couple of pairs of these arm sleeves ands have used them in hot, humid conditions. They seem to work well re upf protection plus they have a kind of wicking property too.

https://www.solbari.co.uk/products/arm-sleeves-sensitive-mens?variant=4530441289769

I think you can get similar ones intended for golfers.

Thanks Mickeg

Has anyone found high UPF clothing for cycling? As sun cream/lotion tends to get sweated off during the warmer weather I thought some lightweight clothing might be a good alternative.

So far I've found a few 'sun hoodies' ( from Uniqlo and North Face ) that might work. They're loose-fitting so not that aerodynamic. They also have attached hoods that I guess you would use underneath a helmet. There's a few other details that might be useful such as a high collar, a half or full zip, draw strings for the hood, zipped pockets and under-arm ventilation holes etc.

I've seen some golf, surfing and running wear that might do the job but I'd be interested to know if anyone has found garments, particularly tops that might work.
TIA

For sale Thorn Raven Tour 537L medium. Very good condition and rarely used rohloff. Please see link on Facebook market place for photos. https://www.facebook.com/share/18QQr3VtTN/

£1000 ONO