2018 was very warm so planty fo opportunity for pests and diseases to spread further north, especially on plants being moved about to supply the trade.
I suggest you report it to the RHS and check the symptoms on their website.
Vendée - 20kms from Atlantic coast. "We don't stop playing because we grow old; we grow old because we stop playing." - George Bernard Shaw
I agree with Dovefromabove, it looks like the early stages of Gall Mite. You may be in Tayside, but your plants may have been raised somewhere else and travelled up to your local garden centre to be sold.
The only way to control it is to prune it back hard. Clean your blades and make sure no leaves or materials are left in the soil or surrounding areas.
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Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.
I have marinka round the outside which is fairing better.
My first thought is that it looks rather like weed killer contamination.
Did you grow the plants yourself or buy them in?
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.
If it was too wet would that have an effect on flowers being deformed?
i think that may be an attack of Fuchsia Gall Mite
https://www.thebfs.org.uk/textfiles/fuchsia-gallmite.pdf
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Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.
I'm in Tayside so unlikely purely going by that?
If you bought the plant in maybe if was already infected when you got it?
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.
I suggest you report it to the RHS and check the symptoms on their website.
"We don't stop playing because we grow old; we grow old because we stop playing." - George Bernard Shaw
The only way to control it is to prune it back hard. Clean your blades and make sure no leaves or materials are left in the soil or surrounding areas.