The crash happened on the westbound exit slip road at junction 16 at about 19:30 GMT on Thursday.

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Secondly we could yet see a rush for the exit and a dollar crash, though fortunately a low probability scenario.

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But failure to do a deal with the IMF leaves Hungary dangerously exposed to outside events such as a bank crash in Spain or a disorderly Greek exit from the euro.

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If these were then devalued by 50% after euro exit, it would probably not crash the euro system.

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Ricky Burlton, 20, from Enfield, died in the crash early on 4 June on the A10 exit slip road at Hoddesdon.

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