The FTSE 100 Index fell 117.9 points, or 2.1%, to 5533.9 amid worries that a raft of Spanish regions were poised to ask for government bailout funds, increasing the likelihood that the country itself will turn to the EU for help.
The fall wiped nearly £30 billion from the value of London's leading shares index, with all 100 companies losing value and banks falling up to 4%.
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Speaking exclusively to ITV News, the man said he wanted to be able to return to the UK without the threat of prosecution.
A rather cloudy night is in store across the UK, with showers coming in off the North Sea coast.
A growing number of parents are fleeing to Ireland from England and Wales, where their children are being threatened with forced adoption.