Black Currant Getting Old?

Thanks all! A couple of interesting reads, there.
I've see no sign of big bud mites (phew) but there is a lot of blister aphid.
I have 9 healthy plants from cuttings already planted out and should start cropping next year, plus another dozen or so from rooted prunings. All the while the original plant remains healthy it can stay there and enjoy a retirement surrounded by the meadow.