Not sure what you mean when you ask about 'replanting' a palm tree. If your tree is a Cordyline australis, and it has suffered since the hard winter, check the trunk from top to bottom - you're looking for blackened, soggy, oozing, rotting, or smelly areas. If nothing and all is healthy, just wait, but if you find anything dodgy as mentioned, cut the trunk down beyond the unhealthy parts, even if that's to the base. You may then get new growth from the roots, but you may have to wait till end of June to see any.

Replanting it before new shoots appear may derail the entire recovery process. If you can, delay the move until the new shoots have a good head of leaves, at least.

thanks peoples for your advice - unfortunately the move already took place from my friends garden to ours about 1/4 mile hike in the back of a lorry ( 2 palms moved ) we put them straight back into the ground but the leaves have all gone brown and dry and started to fall off. Trunk and branches seem very sound though. There appears to be absolutely no new growth this year since move 6 weeks ago. We live in Jersey so its a bit warmer down here than England - our daffs and crocus are out before Xmas and other spring stuff comes through in February usually. I'm just hoping that we see some new growth maybe next year ?

If the growing tips at the top have been killed, the only regrowth you'll get will be either lower down the trunks, or from the base, and then only if you keep them well watered/

I would have cut off about half of the leaves before moving, so you might want to cut the brown ones off now. They aren't really hurting the plant, but allowing more light to reach the upper stem may stimulate growth more quickly--always assuming the frosts are over, where you are! Another thing that might help is a dozen liters of a weak (1 ml per liter of each) mixture of white vinegar and seaweed extract, applied to each tree.

Well thank you again everyone, this has at least given me hope that I might be able to get some growth back on them in time.