THIS IS INSTORE ONLY
I have linked to the product on Tesco website where it shows as 27.97 but I saw it in Tesco Fforestfach Swansea yesterday for £14.99. They had at least 20 of them near the entrance.
I know this deal has previously been available from HMV as shown below.http://www.hotukdeals.com/item/418350/harry-potter-years-1-5-5-dvd-boxset/
But it does not seem to be available any more so this could be useful to anyone who missed out on the last deal