A major gym with about 3,000 members has been put up for sale today with a £3 million price tag. Roko Health Club in Gillingham has been put on the market by its owners and shareholders. Manager Sarah Marshall said: “We are standing strong. It’s business as usual. “It only went on the market today and I’m sure we’ll be snapped up very soon.” The fitness centre is on a three-acre site in Will Adams Way near the Bowaters roundabout. It has two pools, gym, a beauty salon and spa room and offers a wide range of fitness classes. The owners CSSC have also put their three other centres in Chiswick, N…