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Hi there I would put the content through a content audit. What's relevant? What's not? What can be updated? What can be consolidated? Going through this exercise will help you prioritize your plan of action. From there, I would make sure you take a look at Moz's migration guide, as it can help you set up the transfer of your content to the other website - this includes URL mapping, redirects, sitemap considerations, as well as measurements. Hope this all helps! Good luck!

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