The National Trust website has a great page with information about where members of the public can see Red Squirrels on National Trust land.
It’s really great that a body such as The National Trust is playing its part in Red Squirrel Conservation efforts. They even have a dedicated Red Squirrel ranger, Glen Graham, at Wallington in Northumberland. Glen has a short but brilliant video about how he looks after the Red Squirrels at Wallington on this linked page.
Perhaps a National Trust membership would make a good Christmas present?