I still use my Cranks cookery book, and am very fond of Rose Elliot and Delia too. (Roquefort cheesecake with pear salad!) My favourite right now is by Yotam Ottolenghi, who is Israeli but combines that with lots of Middle Eastern and Mediterranen ideas. He is not vegetarian, but many of his recipes are, and they are spicy and different.
(Bit late here to refer to the veal- but I became a vegetarian over 35 years ago, and the what finally convinced me was being in a queue at Dover docks while lorries full of veal calves drove on to the ferry. The sound will stay with me always.)