There is significant evidence to show that White Storks were once a breeding bird of Britain, with an archaeological record stretching back 360,000 years. The chicks were born from one of three nests in the Knepp Estate in West Sussex on Friday. Partly because they are happy nesting on buildings, the folklore and cultural traditions surrounding storks are among the richest involving any bird species. White storks have hatched in the UK for the first time in about 600 years.

... there's no other bird that does that in the UK.

There is evidence that. Suitability for reintroduction: The white stork visits the British Isles frequently but there are no breeding pairs yet.

Elsewhere, they are a shining example of how people and animals can peacefully coexist Early spring migrants, ... White stork pair could become first to breed in wild in UK for centuries. White Storks are particularly associated with the county of Sussex.
The first wild white stork chicks have hatched in the UK for what is believed to be hundreds of years. White storks … The last breeding pair of these magnificent birds nested in Edinburgh in 1416. Storks are back in Britain ... have eaten them out. But there could be a more ominous reason. Revisit from the stork: Rare bird that vanished from the British countryside over 400 years ago is successfully reintroduced in West Sussex.

He added: ‘Storks visit the UK quite regularly although only a handful come every year.