Alerted to this one via Twitter - hope it's of use. From the site:
Growing your own vegetables and herbs is both rewarding and cost effective. We're always keen to find ways to get people active in their garden, and following on from our hugely popular free seeds promotion last year, we're doing the same again!
We're offering free packets of seeds from the Garden Supplies Heritage Range, worth £1.99. Simply fill out the form to the right, hit submit, and we'll do the rest.
* Maximum of one packet of seeds per address, with the variety of seed picked at random. Only available whilst stocks last.