13:45DoctorsSeries 21Barley, Hops, Yeast and WaterBBC One Duration: 29 minutes Mon 18th Nov 2019, 13:45 on BBC One CambridgeshireAl gets involved in an odd family set-up, all in the name of beer. Show more ContributorsDr Daniel Granger:Matthew ChambersDr Zara Carmichael:Elisabeth Dermot WalshDr Al Haskey:Ian MidlaneKaren Hollins:Jan PearsonMartha Rose:Lilian HardyNatalie Rose:Kate SissonsWriter:Paul CampbellDirector:Steve M KellyProducer:Dawn Coulson-BeckettExecutive Producer:Mike HobsonGenresDramaMedicalDramaSoapsBrandDoctorsSeriesDoctors: Series 21 Source: BBC Online