Hi Polly, a few tips for you on how to move them ! As I said, they are not the easiest things to move so go carefully ! Firstly, you need a very sharp spade and it will pay to get a file and sharpen it ! I would suggest that you root prune them now, that will encourage them to produce fibrous roots within the root ball (that you will move later) So, cut around each plant as if you were going to move them but DO NOT lever with the spade, just cut around them in a circle, about 10 inches either side of the plant (giving you a root ball about 20 inches across)
Then later, when you actually come to move them, cut around them again in the same place and SLOWLY prise the WHOLE rootball out of the ground, working the spade around the plant slowly levering as you go ! Place a compost bag on the ground and when it 'pops' out of the ground, carefully place it onto the bag to move it to its new position. Its important that you keep this rootball whole as you move the plant ! Dont lift it by its stem, as you risk the rootball falling off, use the bag !
When your replanting it, place it carefully into the hole (from the bag) keeping your hands underneath the rootball, back fill using planty of peat or compost and LIGHTLY firm in. Finally, give it plenty of water and water often during the first season, especialy if its dry !!
The one problem I can forsee is that roots from the beech tree might impede you as you dig them out ? If thats the case, dig a trench around the propsed rootball and cut the beechroots, rather than risk destroying the Pitto rootball. Hope this helps and good luck !
Lannerman.