I know someone has posted that woolies are doing half price on items but couldn't resist mentioning this offer.
Available online and in store.
Quidco as well I believe.
However lego sell it direct for £24.99 so I quite don't understand how they had it at £34.99http://shop.lego.com/ByTheme/Product.aspx?p=7678&cn=520
Edited to add woolies voucher since it apparently works
Update: Now in the 2 for 3 offer so if you buy three ut works out at £11.66 each