Sir Denis Thatcher, 1st Baronet, MBE, TD was a British businessman, and the husband of the former British Prime Minister Margaret Thatcher. He was born in Lewisham, London, the elder child of a New Zealand-born British businessman, Thomas Herbert (Jack) Thatcher. He is the most recent person outside the Royal Family to be awarded a British hereditary title, which he was granted in 1990.
At the very end of For Your Eyes Only, Bond is sent a Phone Call from MI6 directly to Margaret Thatcher who wishes to personally speak to Bond and thank him for completing his mission however when she thinks she's speaking to Bond he had cunningly given Q's watch to Melina's parrot Max and the PM was tricked into thinking she's was speaking to Bond especially when Max Squawks "Bond, Bond!!!" and "Give Us a Kiss" but actually Bond was busy Skinny - dipping with Melina Havelock.
His real life, wife Margaret Thatcher was played by Janet Brown.