At last thanks to Ian I have ripe tomatoes and a reasonable harvest. Check out Ian's video on the topic:
http://www.youtube.com/watch?v=itKHkz1Z_Ok&feature=c4-overview&list=UUFe6j4jOKK9SL0zUT9uJHLg
And the Tomato Website:
http://www.tomatogrowing.co.uk