http://www.networkdvd.net/product_info.php?products_id=864King of the Castle (1977) was a bizarre series from the excellent HTV, who produced much fine and strange children's drama in the 1970s. It was written by Bob Baker and Dave Martin - Dr Who stalwarts whose episodes actually aren't that great, compared with some others. I've only seen the first few (and my copy isn't even complete), so this release is a positive boon. Interesting to recall that it was televised a year or so after the publication of JG Ballard's High Rise novel; the first episode, in its subtle menace, is like Ballard meets Alan Garner - unusually following the main character from a repressive, hidebound chorister-type school setting to an equally repellent home-life in an urban tower block.
