Snaizeholme sits within the Yorkshire Dales National Park, which is a grey squirrel exclusion zone and is currently grey-free.
According to the Woodland Trust, the UK population of red squirrels has dropped from around 3.5 million to around 287,000 at the most recent estimate, though the true number could be lower than this.
The population in England is thought to be just under 39,000.
The new land includes two large blocks of commercial conifer plantation, and a wedge of hillside nestled between areas the trust already owns.
Since 2023, the Woodland Trust has been restoring the valley’s habitats through large-scale tree planting, covering more than 700 acres of habitat across the valley.