Shoreham EGKA to Shoreham EGKA via the Alps, in a TB20. Via Jungfrau, Mönch, Eiger and others. The 950nm flight was done without landing. Flying is 100% legal under coronavirus restrictions but landing away would massively complicate things, with a mandatory 10 day quarantine. The flight had complex planning and logistics, and the final decision (and the flight plan filing) were done only at the last minute based on the mountain webcams.