If you look at Mastering the Nikon D7000 at O'Reily Media, you can buy the book in the Daisy, ePub, mobi, or PDF formats. I believe you can use iBooks to read ePubs. You may need to buy an app to read the PDF format. It is also possible to get a discount on a package of the hard copy and electronic formats when purchased at the same time.
O'Reily Media has a U.S. and UK shopping cart. You will need to use the UK Shopping cart.
The availability of the electronic formats is a political issue and it's resolution requires a vendor to be registered with the EU and collect the VAT amd other taxes as needed.