Posted: 18/03/2015 at 21:30
The browning on the leaves in the first picture looks to me like frost damage. As the weather warms up there will be more new shoots and new leaves which will replace the frost-damaged ones.
The second picture looks like a pretty healthy hedge to me. All hedges shed leaves - evergreen ones shed them bit by bit throughout the year, deciduous ones do it all at once in autumn.
People often forget that hedges need a bit of nutrition - give it a sprinkling of Fish, Blood and Bone (as directed on the pack) this spring