A work colleague of mine has a large quantity (over 200 I imagine) of tree tubes & shrub shelters for sale.
Most are in quite good condition are are re-useable complete with stakes and adjustable ties.
They obviously vary in size.
There is at least a transit vans load
They are located in Warminster, Wiltshire
please pm me if you are interested and I will put you in touch.
cheers
Nige