Bookmakers Paddy Power have cut the odds on the royal baby being born in August from 60/1 to 33/1.
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John Rowlands died in the attacks in 1974 - his son Paul is among victims' families calling for inquests into their deaths to be reopened.
The former England captain took to Instagram to show off his pancake flipping skills on Shrove Tuesday - and poked fun at his son's efforts.
A drier set up in the next day or so with colder air seeping in and temperatures sliding away.