Just been into the Currys store in Sheffield City Centre and they have the Sony KDL-32D3000 for only £599.
This is the cheapest I have ever seen the D3000.
I double checked and it is the correct model (i.e. 100hz).
This is an excellent deal !!
Not sure if available on-line, but is definately in store. This was located at the back left side of the store in the "take me away today" section.