Dense colonies of Aphis grossulariae at the growing tips of Gooseberry cause severe deformation and clumping of young leaves. The adult aptera is dull green to dark green and is slightly to moderately wax powdered. The antennae are shorter than the body.  The alate has the head and thorax black, the abdomen green with dark stripes, the siphunculi and antennae dark and the cauda pale.

Unless identified by a recognised expert, a photo is required. If the photo doesn't show the key ID features then in the comments box describe the size and identifying characters you have observed.

Associated with Willowherb and Gooseberry.

A new generation will hatch around April and numbers will build towards summer.

True status in Britain is difficult to determine due to lack of records.

Status in Leicestershire and Rutland not known.

https://influentialpoints.com/Gallery/Aphis_grossulariae_gooseberry-willowherb_aphid.htm