It has been a long day and I seem to have lost the plot.
I created a glossary manually, then tested the import routine to create a test glossary. I now have two glossaries.
I did originally have the glossaries showing up in the activity block with a delete option. However, the activity block now just shows the Glossaries legend with no edit or delete option. I can still get to the glossaries but I have totally lost the option to delete either of them. In fact everything in my Activity block is uneditable for some reasosn. (Yes I am in edit mode as administrator.)
I know it will be a simple thing ... as I say, its been a long day ... any ideas would be gratefully received.