Air Accidents Investigation Branch (AAIB) bulletin on this incident (it's the first report on page 3). Posting mirrors first so we don't crash a little gov site if this gets popular.
Low resolution mirror: https://drive.google.com/file/d/1P7czQkX_9_e7fBDYaFWG0Olwtpp...
High resolution mirror: https://drive.google.com/file/d/1ulgy8cGSrG7nT1_p6PmKlxTBBi_...
Original links can be found at: https://www.gov.uk/government/publications/air-accident-mont...