Tamsin Margaret M Greig (/ˈtæmzɪn ˈɡrɛɡ/  born 12 July 1966) is an English actress She played Fran Katzenjammer in Black Books and Dr Caroline Todd in Green Wing She currently stars in two sitcoms: as Beverly Lincoln in transatlantic sitcom Episodes  and as Jackie in the Channel 4 sitcom Friday Night Dinner