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Whilst we have seen temperatures exceeding these figures in recent weeks, the warm spells haven't been long enough to qualify as a heatwave but that could be about to change.

A spokesperson said: "Breeding endangered species like these Loris are what zoos like ours are all about, ensuring that there is a captive population whilst numbers struggle in the wild."

"Whilst it can start off as smiles, very quickly we can see that relationship break down."

Whilst most UK security guards work in shops and other businesses, his data does also signal a rise in the sort of residential work carried out by private firms, he says.

Wealthy people employed "thief takers" to guard their property, whilst ordinary folk had to make do with volunteer watchmen, who focused on the more basic task of keeping order.