Holiday sighting

The only information I was given was in a letter dated 20th September that said “Ealier this year when a colleague from the railway was on holiday in the Lake District he observed what he believed was a wartime Mustang aircraft flying close to Grange over Sands. It is understood the aricraft is privately owned by an aviation enthusiast who possibly lives in Flookburgh, Cumbria”.

Does this help identify the owner?