Martin Kemp believes he only has 10 years left to live. The 62-year-old musician was diagnosed with two brain tumours in the 1990s and though the benign growths were removed and haven’t returned, the Spandau Ballet star – who developed epilepsy as a side effect – thinks the medical scare will have had an impact on his life expectancy. Asked by his son Roman how much longer he thinks he will be alive on their ‘FFS! My Dad Is Martin Kemp’ podcast, he said: “I’ll be really honest with you, 10 years. “I don’t know how long I’ve got left but I will tell you, since I was the age of 34, when I went t…