alphonse

You can just link to http://crevs.co.uk/category/reallife/auntie-evans/ from the header, which I see that you have done.

If you read the wiki, %category% might not always work.

Note on using %category%
%category% does not work correctly with some implementations of mod_rewrite in Apache versions prior to 2. If you are using Apache 1 and experience problems with using %category, either do not use %category% in your permalink structure, or refer to Schlueterica’s plugin (http://isaacschlueter.com/plugins/i-made/lucky-13-rewrite/).
Note on using %category% with multiple categories on a post
Where you assign multiple categories to a post, only 1 can show up in the permalink. This will be the lowest numbered category (see Manage Categories). The post will still be accessible through all the categories as normal.

This tutorial is great and very well adapted for use.