I’ve bought the B&M brand several times (https://www.amazon.com/gp/product/B00473NSXW/), works well for me. I slice it up as soon as the can is open and keep the unused portion in the fridge. You need to use it within a week or so, or it’ll start to mold.
Back in Australia a lot of people have the UHT as a backup to the fresh stuff, especially in remote areas. Storing for 6-12 months in the pantry is not a problem.
I’m going to get some to try it out, thanks! An alternative from Australia is Bega’s cheddar in a can that has an indefinite shelf life: https://www.amazon.com/gp/product/B00TEMS4U8/