Thanks. Did not consider the M.2 possibility as well!External USB caddy.
M.2 PCI-Express (or SATA) expansion card for PCI-Express slot.
SATA expansion card for PCI-Express slot.
Very interesting! Saw this on Amazon USA but not in UK. https://www.amazon.com/Adapter-SATA3-0-NO-Riad-Desktop-Support/dp/B0B5RJHYFD?th=1