I bought this primarily for the Hazard perception DVD - thinking that I could pick up everything else I needed from the DSA book I had bought.
But, If you buy this set - you do not need anything else! I only referred to the book whilst being driven to the test centre on test day.
The theory DVD is a fantastic way to learn - and it helped me learn over a week of evenings, going from someone without a clue to a full pass - it enabled me to achieve a 100% pass on the test! I would not of been able to do this had it not been for this DVD.
The Hazard DVD part of the set could be better - but the quality of the videos are not much different to that of the test centre. Be warned - the DVD only has 10 video clips - whereas the test center tests you on 14. So your scores on the DVD will not be representative of your final scores at the test center! In my opinion it seemed easier at the test center too.
I would also suggest using the HAZARD DVD on a proper DVD player, when I used it on a computer - the quality was not so good.
At the end of the test, the test centre computer asks you if you would like to try out some questions that they intend to use the following year - these are not marked as part of your test result, but just help the DSA plan ahead for next year. I did this - and noticed that the questions they asked where also part of the theory DVD I had been revising on!
I have not yet used the practical DVD that comes in this set - so I cannot comment, but if the rest is something to go by, then I know it will be invaluable.
Good luck everyone!