There are currently 24,939,352 Oyster cards in circulation that have not been used in a year or more. That's £46,631,475 worth of deposits.
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Emergency services were called to Chamberlayne Road in Kensal Rise at around 3:30pm.
Sir Martin Moore-Bick said there are more than 200,000 documents still to disclose.
There have been a string of fraud cases where con artists have posed as victims with the total of fake claims exceeding £650,000.