John went down to the Tower of London to chat to Keith about Plankton's 40th anniversary. By the way Plankton are the UK's oldest existing independent Christian music publishers. Keith revealed a lot of interesting information about Plankton's early days, their ethos, their current artistes and their future dreams. We took the opportunity to delve back into good old UK Christian music, as well as parts of tracks from Plankton's special anniversary dual CD which is also available on iTunes..