Researchers have discovered stone tools in Norfolk, UK, that suggest that early humans arrived in Britain nearly a million years ago - or even earlier.

The find, published in the journal Nature, pushes back the arrival of the first humans in what is now the UK by several hundred thousand years.

Environmental data suggests that temperatures were relatively cool.

This raises the possibility that these early Britons may have been among the first humans to use fire to keep warm.

They may also have been some of the earliest humans to wear fur clothing.