Having finally thought to search Google, it only took me a few minutes to find this:
Access Ltd Programmable Point of Sale KeyboardsThe top one is even clearly marked "Lloyds TSB" which is where I saw it – appears to be the AKC098 model. (
Edit: Sorry – all the example models start half-way down the page. The image at the top of the page is clearly a
British model…)
At the moment at least, the spec sheets say Cherry MX. Cherry MX blue clickers are very plastic-on-plastic and rattly, and this keyboard emitted a very deep, sharp, resounding click like you'd only expect from vintage ALPS or Monterey.
I felt a strong desire to rob the bank, not for the money, but for all the keyboards! If those were Cherries, they can get a sound out of them like nobody else on earth can.
"This is a hold up! Gimmeh all ur Cherriez and no-one will get hurt!"