This is a well written guide with a good selection of nice rides.
If you are an old hand on a bike in London you will likely know the main elements of most already. This is because many rides make use of the off road cycle paths in London which are (sadly) rather few in number.
I bought this principally to find new rides i could take my children on, and it doesn't disappoint. This will be a worthwhile addition to the family cycling library.