Here are a few photos just to whet your appetite from our visit in 2006. As I mentioned in the other post I may have a return visit shortly and be able to update the photos.
The train details can be found on the National Rail website: http://www.nationalrail.co.uk/
Had a quick look and the trains either run from London Euston or Marylebone. The trains from Marylebone are more direct (just over 2 hours) whereas from Euston with a connection in Birmingham it can be toward 3 hours! The fares can vary greatly so this requires some planning.
Here is the official visitor website that will provide a wealth of knowledge: http://www.visitstratforduponavon.co.uk/
You can get some vouchers from this website: http://www.visitheartofengland.co.uk/counties.aspx?county=8