Ash dieback and elm disease have infected trees in Hollingbury Woods, Wild Park and Stanmer Park.

The council says the trees with ash dieback are a danger for those using the woods.

While new research suggests infection rates may be slowing, conservationists say the impact remains severe.

Sheffield City Council warns its spending on tree maintenance is "well above" thresholds.

Daytime closures are in place in the Ballacraine area to allow diseased trees to be removed.

National Highways says ash dieback has spread rapidly to the trees near roads in the South West.

A council says it will fell a number of diseased trees, and replace each with five new ones.

The Nation Trust, which manages the estate, said the diseased trees in an area popular with walkers could pose a risk to the public.