Large billboards and signposts carrying the warning "Go home or face arrest" will be driven around London on the back on advertising vans this week in a new Home Office bid to reduce illegal immigration.
The billboards will also display the number of illegal migrants arrested recently in the relevant part of the capital.
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Police have released an e-fit of a man suspected of attacking her.
The force has been tweeting after carrying out a series of dawn raids.
Adenike Akingbogun made the dangerous manoeuvre after ignoring the crossing lights and driving onto the tracks.