In August 2020, Leech wrote to the Big Five tech giants – Amazon, Apple, Google, Facebook and Microsoft – urging them to donate £400,000 each to secure the future of the Bletchley Park trust where Turing did much of his work after the organisation announced it was to lose more than £2m and cut a third of its workforce. Leech said the trust was important for protecting Turing's legacy and that the country "mustn’t be allowed to forget the dark stain in our history" – referring to Turing's treatment and conviction for homosexuality.