Hi Derek http://www.workerthread.com brought this to my attention. So I thought I would give it a mention it is the website of the UK Access User Group http://www.ukaug.co.uk/. They do have some information on SQL Express on the site. I have been asked to present a session at an event for them later in the year. I will give you more details nearer the time. The session will probably be interoperability with SQL Server and Access.
There is a regional meeting on Wednesday 20th Sept in Cambridge see the link to the site above.