Buddleia (butterfly) bush, white flowers (Seafield EH7)

Just dug up and needing a new home. Been in our garden for a number of years. We have pruned it down to about 80cm for removal but stems will regrow in spring. It will reach about 2 metres tall each year (and about as wide!) but can be cut back hard each winter. It is quite heavy and bulky! Roots wrapped in plastic for now but pick up asap.