Just because it's more 'organised' doesn't necessarily mean you'll have a better experience...as always it depends on the individual girl you meet, her attitude to her work and which side of the bed she got out that morning.
Some reviewers have reported problems with HoD such as understated ages, clockwatching, time-cutting, back-to-back appointments and occasionally incorrect service lists. Having said that, they do have some reliable, nice girls who offer good service. Check out the reviews on here, also look at their places in Milton Keynes (Annabellas & MKEscorts) as some girls work at both.
To book you need to look at the rota & gallery, choose who you would like to see when & for how long, then call up and arrange something. You then will be asked to confirm on the morning of your appointment to make sure both you and the girl are still available. Then you turn up at the address at or just before your start time. In the room, you may want to confirm some services and hand over payment and get down to some fun.