(Reuters) -Critics called for Metropolitan Police Commissioner Ian Blair to be replaced on Friday after a jury convicted his force of endangering the public by shooting dead an innocent man in 2005 when he was mistaken for a suicide bomber.
Blair said after Thursday's verdict he would stay on because the court had not found "systemic failures" by the police force.
Police shot Brazilian electrician Jean Charles de Menezes, 27, seven times in the head after he boarded an underground train in south London on July 22, 2005.
They had spotted him leaving an apartment block and wrongly identified him as one of four men who had tried to attack the city's transport system a day earlier. They trailed him to the underground station.
The Conservative Party's spokesman for law and order, David Davis, wrote to Home Secretary Jacqui Smith, urging her to replace Blair.
"The trial shed light on serial, systemic errors ... We now need the right leadership, at every level, in order to restore public confidence," Davis wrote.
Smith and Prime Minister Gordon Brown have stood by Blair.
Labour MP Kate Hoey, whose south London constituency includes Stockwell station where de Menezes was killed, joined the chorus calling for Blair to go.