In theory in this modern world it should be doable but in practice the cost,as Rod1 intimates,and also the treacle that you will encounter and need to get through will for all practical purposes make it a virtual non starter in a sensible time frame even if you have a bottomless pot of money!
The LAA won't be interested it being, amongst a miriad of other things a factory non orphaned aircraft.There are currently no Pipistrel aircraft approved by the LAA anyway so that route is a non starter.
Being a 10year old aircraft on the Greek reg I suspect it may not currently even be on a EASA permit.
You would have to get the aircraft assessed by the CAA to go on the 'G' reg and to do so will cost you silly telephone numbers.
Personally and in short...forget it!