rarest

"Many concerns quite understandably relate to our rarest wildlife and habitats, such as ancient woodland and bats," he said.

One of the world's rarest types of lemur has been successfully bred in Oxfordshire.

A 50p with an Atlantic salmon on one side and the King’s portrait on the other is the rarest such coin in circulation, says the Royal Mint.

And I would say that’s the rarest type of case to get relief.”

Thought to be one of the world's rarest penguin species, the hoiho can be found only in New Zealand.