Gooseberry sawfly will decimate the plant in a week or so and you need to do something with those on the ground as the eggs are laid at the base of the bush and you will continue to have this annual problem. I threw my bushes out two years ago - got fed up of nurturing them only for them to become sawfly central.
Do not concern yourself with other plants in your garden - at least as far as Gooseberry sawfly are concerned -sawfly are plant specific.

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Rat

British by birth
Scottish by the Grace of God

[size="1"]Journal updated Tuesday 5th August