best time to move unhappy fruit bushes?

I have a couple of gooseberry bushes and a few jostaberry and red currant bushes that are obviously unhappy in their current location. Probably too much shade.
I am going to dig them up and move them to a better spot (if they die, they die - they're not producing anything where they are now so nothing to lose).

What's the best time to move them? It's winter in England now, so they're presumably pretty dormant. I'm thinking of doing it in the next month or so.

I have no experience in this, so if anyone has any wisdom to offer I would be very grateful to hear it


PS all of these bushes have siblings elsewhere in the same garden that are producing loads of fruit, so I know the problem must be the precise site (microclimate) and not the English climate, the soil type or the nincompoopery of the gardener

Paul Ryan : Hopefully you will get a reply from someone living close to you! Otherwise, you are getting our best guess- !

I would ether phone up a local Arborist, Tree nursery, people and ask about best time to transplant, I think that many would tell you that you are late
for a fall move and early for a Spring move!

I will be interested to see other opinions posted here ! For the Good of The Crafts ! Big AL