I see that TV channel More 4 have commissioned a programme called ‘Inside the Spitfire Factory’. Don’t know when it is supposed to air but they have this to say:

A new six-part series delves deep into the world of classic military aircraft restoration at one of Britain’s most unusual factories. Located at the historic Biggin Hill Air base in Kent, the factory exists to bring back to life Britain’s most iconic aircraft – the Spitfire. Over the course of a year, the series will follow the journey of three different Spitfires as they are painstakingly restored from rusty remains in the hope of getting them back to full flying condition. A larger than life cast of characters – from mechanics and pilots to historians and WWII veterans – will also be on hand to explore the Spitfire’s rich history and tell stories full of surprises.