Stick on an anonymous mask and walk?
A group that attempts to defeat fascist-detection technology by the most laughably transparent means
https://www.forbes.com/sites/andygreenberg/2010/09/27/how-to...
But police can impose an order - for a defined area for a limited amount of time - under Section 60AA of the Criminal Justice and Public Order Act 1994 allowing officers to demand that one removes "any item which the constable reasonably believes that person is wearing wholly or mainly for the purpose of concealing his identity".