Tyzack used to make their own machinery a very long time ago both woodworking and metalworking in the sort of sizes for home and small workshop use.
I don't think they make any machinery themselves now although I'm willing to be corrected.
Instead they badge other manufacturers kit such as Multico bandsaws.
Maybe if you have a photo, someone here might recognise the original model and reputation.
They also badge a huge range of handtools. I don't know if they still make hand saws. I'm no expert in these things as they don't have a power lead or come in 3 phase versions!!
Bob