"Most of the UK has been basking in glorious sunshine this weekend, and whilst we’d urge people to make the most of it, we’d also remind them of the importance of keeping safe near the water.
In this instance, we really were there in the nick of time, but had it been different, then these four individuals would have ended up in the Thames without life jackets."
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The London Mayor insisted he was "not saying that nationalists are somehow racist or bigoted" after outraging SNP supporters.
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