Detective Superintendent Stephen Ratcliffe said this was "a gang of experienced criminals who had been the subject of an investigation by the special projects team at the Metropolitan Police for a couple of months before this robbery."
More top news
Arsenal host Borussia Dortmund at the Emirates this evening as they strive to secure a place in the final 16 of the Champions League.
Della Callagher died and 32 other diners became seriously ill after eating the poisonous yuletide meal.
The ex-Tory MP's rant was secretly recorded on the driver's phone and published in The Sun.