frost has caught my spuds

I would leave em be. If they are frost damaged it won't spread, and you have nothing to gain by removing them.  Once the rest of the plant pushes up it may be an idea to nip off the damaged bits.  Just so it looks nice and tidy if nothing else.

Hi, I wasn't too good yesterday and didn't get out to cover my spuds for the night. I notice today that the frost has caught some of the leaves. What should I do next, do I remove these leaves or just leave well alone?

dont worry about it,they are just slightly nipped back and delayed.id be more worried of frost getting well established haulms.
keep a very close eye on nighttime temp predictions for your area.a bale or 2 of straw handy will help.
put a good 4-6" layer over each haulm and you'll be fine.

The damage is done if there is frost on the leaves and the sun comes up and melts it quickly.

The old boys used to get up just before sunrise and water the frost off with a watering can before the sun got on them.

Does anybody still do this?

A tip if you use fleece, it it more effective if it is dampened.

yip massive plant cell destuction occurs with the sunrise.bit like putting a lettuce in the freezer then expecting it to be ok when you defrost it lol.
dont worry about frost attack if the haulms are just emerging.these are sensor haulms and their main job in life is to act as sensors to the tuber underground.
if they recieve frost damage they will chemically inform the tuber to slow down upper growth until conditions become more favourable.
root growth will continue unaffected,hence either earth them up or dont plant too early.bob

 Havent been able to get to my plot for about 4 days. Went there this morning & the pots where all about another 3" above ground so re-earthed them. This is the second time I have done it so will probably be the last.
 The frost hasnt seemed to of harmed them at all.