The star of the hit Prime Video series is usually outspoken in his columns and on social media, but he chose to keep his major health news private until today’s series finale

The former Top Gear and Grand Tour host shared the news in the final two episodes of the fifth season of Clarkson's Farm, which were released overnight.

He told his loved ones about the diagnosis while filming the show and shared that there had been complications during treatment - the star has known about the news since May