It is almost certainly due to your moving them just as they were about to come into flower, all you can do now is keep well watered. The usual time to move a peony is in late autumn when it has died back as this causes much less stress to the shrub and you can cut off any remaining top growth.

I thought it must be, but I had no choice but to move them, thanks very much for you quick reply, I will keep them well watered, do I cut the brown leaves off, or just leave the plants as they are?

I also moved 2 of mine only yesterday as they had to be moved for new project.

Thanks for the reply's, will you please let me know if the leaves on yours go brown Scokat, I would appreciate that.

Yes I shall I am holding in the water Haian.

Haian yes remove the dead leaves and if there is no rain not only water but mist.