Found 26th Mar
Dropped a further £1.50 to £13.49 Prime
The Amazon buy-box is currently £24.49 from an Amazon marketplace seller. Check the "Other Sellers on Amazon" box over on the right and it's listed at £14.99 "Sold by: Amazon". It's currently out of stock, but you can place an order at £14.99 and I'm sure you'll get it soon.. I've waited this long to get it after all.