Unfortunatley the BBC 'Dig In' isn't running anymore
that info is on the seeds they gave away last year and I found this on the home page
"About Dig In
Thanks to everyone who took part in the Dig In campaign throughout 2009 and 2010. We hope you enjoyed growing the Dig In seeds, especially those of you who are new to growing vegetables.
This site is no longer being updated, but it is still packed full of useful information."
I came accross this
https://www.getintogardening.co.uk/Account/LogOnHavent used it myself so cant guarantee it works but may be worth a go