Acanthus possibly spinosus rather than the more commonly seen A. mollis.

Thank you for your reply. You're right :)

Bears Breaches, aka, as Owdboggy suggests.

Nope, A. spinosus leaves are much more thistle-like. It's more likely to be one of the A. mollis hybrids, such as 'Summer Beauty'.

That's it, I am giving up identifying plants on here or on any other site. From now on every plant asked about will be labelled 'George'.
The Acanthus in our garden which came from the National Collection labelled A, spinosus is exactly the same as that one shown.

I have this one in my garden, the label on mine says..... Common Name: Bear's breeches
Genus: Acanthus
Species: spinosus
Skill Level: Beginner
Exposure: Full sun, Partial shade
Hardiness: Hardy
Soil type: Well-drained/light, Dry, Moist
Height: 150cm
Spread: 90cm
Time to plant seeds: March to April
Time to divide plants: February to April
Flowering period: June to September

Sorry, Owdboggy and Ladyessex! I certainly wouldn't be the first time that I was wrong! I was remembering one in Butchart Gardens that was labelled A. spinosus, which the foliage closely resembled a fine Scotch Thistle.

Thats ok, we can't get things right all the time LOL xx