It comes as scientific adviser says the UK lockdown might eventually be lifted by age group and location.
Abdul Mabud Chowdhury, 53, made the appeal on Facebook five days before he was admitted to hospital.
Warm weather saw an increase in park visits last weekend, but overall activity was lower than usual.
Children with illnesses unrelated to Covid-19 could be coming to harm, NHS official's leaked email says.
A BBC investigation has found online scams selling fake protective equipment and coronavirus tests.