Following orders is not lawful excuse. Remember the Nuremberg Code Article 6 Section 3: In no case should a collective agreement or the consent of a community leader or any other authority, substitute for an individual’s INFORMED CONSENT. LEADERS SHOULD BE AWARE THAT MANDATING MASKS ON THE CITIZENS OF A NATION and preventing their access to food, healthcare, transport or education if they don’t comply, is A WAR CRIME. MASK OR ANY OTHER MEDICAL INTERVENTION MUST REMAIN VOLUNTARY. See this written evidence to Parliament https://committees.parliament.uk/writtenevidence/2267/pdf/
See Kate Shemirani and Dr Kevin Corbett for how they feel about this current situation regarding vaccinating in schools and below Anna De Buisseret explains affidavit holding Prime Minister responsible if harm comes to a child.