Shame. I have two Filcos over 15 years old.
Some of the switches started dying at the same time last year. I guess I tipped over the lifetime of cherry switches.
I looked around but there are so few UK TKLs. I didn't want a layout change of page/home/end cluster or lose "useless" keys ins/pause/etc. (I remap them and now rely on them). I didn't like the look of prebuilts from Keychron or want to pay £500 or mess with shady "group buys" for parts.
So I bought a bag of switches and a soldering iron instead and expect to get another 15 years out of them.
Happy customer but I guess not a repeat customer.