Day 163/22. Mullein moth caterpillar.

Found in our garden today. I'd never seen one before that I remember.
The yellow, black and white caterpillars of Mullein moths are one of the most distinctive caterpillars found in the British Isles.
When fully grown they are almost 50mm (this one is) in length with a mixture of black and yellow markings on a pale bluey grey/whitish body.