I’m currently on Day 8 of self-isolation following a positive LFT, no negative tests yet. I’ve been asymptomatic all along. Today (1 April) the guidance has changed to say you only need to isolate for five days after a positive result. I’m unsure as to whether I follow the guidance that was in place when I got the positive result or the guidance that came into force today. Does anyone know? I’m in England.