The Woodland Trust confirmed that ash dieback has been found in both mature ancient woodland and woodland creation areas on its estate at Pound Farm in Suffolk.
Infected ash trees have also be identified at Norfolk Wildlife Trust's Lower Wood reserve, Ashwellthorpe. In the UK, ash trees make up around 30% of the wooded landscape, across woodlands, hedgerows and parks.
The Forestry Commission is suspending the planting of ash trees in public forests it manages and the Woodland Trust is supporting a ban on importing and moving ash trees in a bid to stop the disease becoming established in the UK, which the Government is poised to bring in as early as next week.
More top news
Senior medical staff have urged junior doctors and the Government to break the deadlock over the medics' long-running contract dispute.
A young girl has become an internet sensation after pictures emerged of her being attacked by a goose.
A professional mixed martial arts fighter has died after being involved in a hit-and-run incident in Florida.