How to read what is here

What is set out here is a description of how something works. A description cannot stand in for advice that accounts for someone's own situation.

Errors and omissions

Things move on. A page that was accurate when it was written can be out of date by the time it is read, and no undertaking is given that every page is current.

Other websites

A link may lead to a website someone else runs. Neither their material nor their conduct is controlled from here.

Getting in touch

[email protected] is the address for correspondence about the material published here.