I live with my wife and 2 young children and I am pretty sure we have all had it. We spent a weekend in London with friends on 14th / 15th March back when you could do things like that that and one of the people we stayed with developed all the classic symptoms a few days later. She works at the Foreign Office and was in contact with a confirmed positive case (seems like Westminster is absolutely rife with covid).
Each of us developed very different symptoms which made us think the NHS guidance around cough and fever is really not adequate to stop infected people from continuing to spread the illness unknowingly. The kids primarily developed fevers with our son's coming close to 40 degrees at times. My wife had aches, chest pain, slight cough, fatigue and confusion. I was generally ok but with a bit of chest pain, fatigue and mild confusion (e.g. I tried to put a bib on my wife at dinner).
Interestingly our symptoms first showed on around 19th March then went away and came back around 23rd March. We are now mostly back to normal.
Think it's worth sharing as don't just take cough and fever as the only signs and also be aware that symptoms seem to come and go. I think the more people that share their experiences the better.