There is still time to get planting those root ball hedging options. Get in while they are still available as spring is on the horizon.
We have some excellent Fagus sylvatica at 175 to 200cm in height. Truly cracking plants.
The lovely upright Prunus lau. Elly. Upright and slender in habit.
Taxus baccata of course from 80-100cm to a whopping 160-180cm in height