Thank you Tom - I like it - if in doubt, take it out.
We will contact the businesses with the widget and ask them to remove. If we can't get hold of them, do you think disavow will be satisfactory before filing a reconsideration?
Additionally, I have read recently there is an option to remove URLs from within WMT (a section called "optimisation.") But I cannot see this - and wonder if I have misunderstand.. (It looks to me the only section in WMT regarding link removal is an option to remove pages from within your own website from the index?) Is there a section in WMT to remove inbound links from third party websites?
Thanks indeed for your help