Filmed undercover at the not-for-profit UK Biocentre in Milton Keynes.

The BBC investigation programme filmed undercover at the not-for-profit UK Biocentre in Milton Keynes.

The Tilbrook-based lighthouse lab, which can process up to 70,000 coronavirus tests daily, was featured in tonight's BBC Panorama after an undercover reporter worked as a lab technician there in January and February 2021 - during the second wave of the pandemic.