Although tuberculosis (TB) cases across the country have stabilised, Public Health England says cases in London are continuing to rise at a worrying rate. New figures show 3,426 cases were reported in the capital last year - making up 40% of cases nationally.
The majority of London cases were among people born outside of the UK and many of these were young adults aged between 25 and 44.
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Transport for London is not happy that its branding has been used.
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Look closely at this collection of images by photographer Jim Grover and you'll notice there's something missing.