The 220V single phase 60Hz should work fine in the UK. Some of the American states have a slightly different supply voltage. I'm running one designed for 208V 60Hz and it doesn't appear to have problems. It's got jumpers that can be set for 3 different input voltages.
The big American manufacturers tend to publish spec sheets for older welders on their websites. Worth looking up any model to check it takes single phase at about the right voltage before buying.