Seen this on mse and thought it was a great deal.
This aciclovir cream, which is the EXACTLY the same as Zovirax at only 49p
Postage makes it slightly more expensive, but if you buy 10 tubes, postage costs only £3.40 via courier.
Some other good bargains on their site too. Hayfever promotionhttp://www.chemist-4-u.com/pages.php?pageid=13