According to the ONS, 262,000 people - around 0.5% of the population - answered “no”

Schizophrenia is a major illness. At any one time about 220,000 people are being treated for schizophrenia in the UK by the NHS - 3. National Institute for Health and Care Excellence, 2014, Costing statement: Psychosis and schizophrenia in adults: treatment and management.

Distorting and twisting facts to suit an argument is fun.