My first MIG was a miller mm211 transformer machine - specs called for 60hz ONLY, either 120 or 240 volt.
Second one was also a miller MM252 - ALSO transformer, ALSO 60 hZ ONLY.
Third one was the newer MM211, inverter model - 50 OR 60 hZ 120 or 240, doesn't care.
I only spent a few months in England teaching soldiers top secret military equipment - this was back in the '60's, and I don't recall how things were wired in houses, other than all the light switches being upside down - it may be possible to get a step-down transformer, but would probably be a LOT less hassle to sell the Hobart and get one of the more popular euro welders there.
Even if you could find the right voltage transformer, you'd still have the frequency problem, and I doubt that a small older (likely transformer) welder would like the different frequency anyway... Steve