Yew is an English native, and forms superb, dense hedges from 1m to 3m or more, providing excellent screening, almost total shelter from wind and weather and excellent privacy. An evergreen conifer that is easy to manage, it grows at 20-30cm a year, quicker than many people think. It responds well to frequent trimming, yet can be cut just once a year in late summer too.
Although plants can grow very large (they are trees after all), by planting them close and clipping every year, you can maintain them at a very respectable height.
Potted plants can be planted any time fo the year, at 4 plants per liner Metre of hedge. Do not trim for 2 years after planting. Buy as many as you need for no extra P&P.