He was a victim of a scandal involving alleged share-price manipulation at a sister firm fighting a takeover bid.

ECONOMIST: Inside out

In recent weeks, any setback for the bid has given a fillip to the German firm's share-price, mostly recently when the finance minister of the exchange's home state of Hesse condemned it.

BBC: Deutsche Boerse shareholders had opposed the LSE bid move

As of last week, Clyde Union Pumps (formerly Weir Pumps) has been added to the long list, and Dundee's diagnostics firm Axis-Shield is resisting a takeover bid from the US - at least at the current bid price.

BBC: Who owns the best of Scotland?