BOOTS bosses behind a £1 billion tax avoidance scam were left shamefaced yesterday when doctors descended on its flagship store to demand the company coughs up. 

Doctors in white coats marched on the Oxford Street store as anger rises over the £1.21 billion the high-street chemist has dodged in tax. 

Health workers handed shoppers mock prescriptions for a properly funded NHS — starting with a probe into Boots’s tax avoidance scheme.