Pruning yew

I have a yew in the corner of my garden which has never been pruned- at least not since I moved in four years ago. The yew is about 4 ft across and approximately 6 ft in height and very bushy. When is the best time to prune yew, and how hard can you prune it ? Any advice welcome !
Cheers
Rat

 

hello you can prune in autumn or spring you can prune back to the trunk and it will regrow so it is as hard as you like they are so easy good luck they are brilliant as topiary plants :D :D