Espresso machine / Bean to cup coffee machine (Brize Norton OX18)

Hi all from a busy, caffeine-dependent IT department!

We're seeking a coffee machine for the office. Ideally we'd like it to be an espresso machine (the kind with a portafilter), or a bean-to-cup machine. Unfortunately we cannot accept pod-based systems (Nespresso, Dolce Gusto, Tassimo etc.) or drip coffee machines. I know this might be a bit of a big ask, but we'd be eternally grateful!