Drama: Doc Martin, 9pm, ITV

If anyone can help the curmudgeonly doc ( Martin Clunes, left) change his ways, it’s Dr Rachel Timoney. Louisa’s return further raises questions about her and Martin’s relationship and Al welcomes his first fishing guests, although an uninvited one means a good review is not guaranteed. Meanwhile Bert tries to rejuvenate business at the restaurant by joining an online voucher scheme and offering two- for- one lobster specials with the help of local fisherman Gus.