"Senior Whitehall officials have told The Telegraph that Bourgass and some of his associates intended to target the busy rail link between central London and Heathrow Airport. The plan was to place ricin, a fast-acting and potentially lethal home-made poison, on hand rails and in lavatories on the trains. "
http://www.freerepublic.com/focus/f-news/1385333/posts
Yes he had a plan to put some ricin on some trains. But he didn't have any ricin. That's the bit that makes him a fantasist.
Any link between Bourgass and the other defendants (in a terrorist sense) was never established. I place little store in what 'senior Whitehall officials', aka Labour spin merchants, say. There is an election coming, it's in their interests to look like they're nailing massive terror plots.