AFerry.co.uk

very easy to use booking system for the best price

Everything is clearly laid out in logical and easy to follow steps, ensuring you book exactly what you want. Unlike other booking websites, it's very easy to go back a step or two and make changes, such as adding the mother-in-law as another passenger, or a trailer to put her in!
Unless you know of a very good special offer from another booking site, it's not really worth the trouble of checking out the competition. I've booked 3 times in succession with Aferry as no other website I've looked at has beaten them for ease of use and price.