All London personnel have been told not to wear their uniforms off base. But the threat level at military bases has not been increased.
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Lord Coe says athletics must "come out fighting" in response to widespread doping allegations, which he described as a "declaration of war".
Fergus Hillman's mum has already visited the barber twice because her baby son's hair grows so fast.
Sales of teabags have dropped as consumers switch to coffee, green tea and speciality blends, market research has found.