So far I have:
- checked the settings on adminstration page. (Aspell is on)
- checked Aspell worked via command line
- checked path was correct on admin page
- checked the version (0.60.2)
- checked the dictionaries with 'dump dicts' (Included en_GB)
- set language to en_GB on 'variables' page
- check spellcheck button not 'hidden'