"Blackcurrants are pretty tough Noel, so you should find they cope well with transplanting. This is best done when the bushes are dormant between autumn and spring, and like most plants it's best to make sure they don't get too dry during their first year in their new home.
When can I move a red currant bush?
Fruit bushes can be moved when they are dormant. This is best carried out November to December or in March. It is best to move the plants to their new site after lifting, rather than storing plants in pots first.
How do you transplant a red currant bush?
Dig a hole at least twice the diameter of the root ball, usually about 1.5 ft in diameter and spread the roots out in the hole. The stem should be planted about 2.5 inches (6cm) deeper than it was originally so separate stems emerge from the soil rather than a single trunk.