There have been 209 arrests made so far today, 25 July aspart of the Metropolitan Police Service's major crackdown on thieves.
109 stolen mobile phone handsets have been recovered.
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Police said they are "extremely concerned" for the welfare of a "vulnerable" mother and her two children who have gone missing in Bexley.
It is hoped the 7,400-mile journey will become a cost-efficient and time-saving way of transporting trade between China and the UK.
The Supreme Court is set to decide on whether disabled travellers are legally entitled to have priority use of wheelchair spaces on buses.