WCIF a Master lock?

I tried RT-Mart and a local mom-and-pop hardware store, but neither place had much between tiny luggage locks and big bike locks.

I’m looking for a hefty lock that can withstand a cat-burglar’s lock cutter. One of those thick-assed high-tensile steel Master locks, the kind that can withstand armor-piercing bullets.

Any ideas where?

B&Q has a few varieties of them. I got mine there whilst looking for a reasonable one to secure my fortress.