Instructions:Free delivery on orders over £25, excluding postage and packing. To be eligible for the offer consumers must quote reference code SOS7 in the promotional code box at the website check out page. Thorntons cannot be held liable for not discounting orders if the correct code is not given. An order is one delivery to one mainland UK address. Offer is applicable to one order only. Saturday deliveries are sent through the Royal Mail's standard service. Offer is open to UK residents only. Offer is available to customers of Thorntons Direct only. Offer valid until Friday 27th July 2007 and cannot be used in conjunction with any other offer. There is no cash equivalent to this offer.
Just re-read the first line = 'Free delivery on orders over £25, excluding postage and packing.'!! ????
The above is a copy paste of the email I received, I haven't tried the code yet