I have just finished Straight to the Heart of Revelataion by Phil Moore. This is one of a series by Phil. I found the book easy to read and contained some helpful insights and background - some gems actually. I used the book as part of my daily devotions so read a chapter a day - very easy. Sometimes it is a good discipline to work through a book of The Bible and in reading Revelation it is good to get some help! One of the highlights of this book is the very helpful insights into heaven - good preparation!
If you looking for an easy-read accessible commentary this could be the one for you. Like Tescos you can also pick up 3 for 2 at Newfrontiers Resources or £6.25 each at The Book Depositoryhttp://www.bookdepository.co.uk/Straight-Heart-Revelation-Phil-Moore/9781854249906