Fairchild Metros.
Two Fairchild Metro 111s were modified to UK CAA Spec in 1988, these were not operated by the Airline, ( which folded before operation), one aircraft, S/N AC692B G-BOJN went to Air Nelson in New Zealand as ZK-NSS, where it later was de-modified back to US spec I believe. The second aircraft AC706B G-BUKA was to remain in the UK and is operated out of Coventry by Atlantic.
The aircraft had a CAA Flight Manual, which specified a 2 pilot crew if I remember correctly.
There were a couple of MROs which held Approvals for Metros, MacAlpine at Luton and Glosair who used to maintain French registered aircraft, but I should think that the only Part 145 MRO Approved now is probably Atlantic.
Hope this is of help,
regards,
om15