Walk around Brassington and Carsington, Peak District

After breakfast Karen and I drove to Brassington (a village I used to live in until 2003) and parked in the car park in Wirksworth Dale. We walked to where the road is closed and headed across the fields, along Manystones Lane for a short distance, then joined the High Peak Trail at Harborough Rocks.
We followed the trail to near the old windmill and crossed Manystones Lane again to climb over a stile and follow the path across a large field. We dropped down a long slope then up another and then got views down to Carsington Water and far away into the distance, probably 20 miles or more. Dropping steepl down a winding path, we passed through a gate onto a path between houses and joined the road into Carsington. We turned right and followed the side road until we passed a style onto a continuing wide path which slowly rises until we reached Carsington Pasture.
As we crossed a track into another field, we heard the engines of an aircraft approaching from behind. It flew at a fairly low level straight overhead. It had two propellers, one on each wing and appeared to be of WWII vintage but there were n0 markings, at least underneath.
We followed the path wending its way down past old lead mine workings and down some fields until after passing through some farm buildings, we joined Town Street in Brassington. We returned uphill to Wirsworth Dale where we had parked. As we were taking our boots off, the same aircraft again flew directly overhead! And as it passed, a Spitfire or Hurricane cam from another direction and passed very close to the aircraft and they disappeared from site from within the Dale. I have no idea why these aircraft were flying past.