Sophie Hosking, from Wimbledon, was also awarded an MBE for services to rowing.
The athlete, who won gold in the Lightweight Women's Double Scull at London 2012, learned to row at school in Kingston and now trains at the London Rowing Club in Putney.
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Muslim leaders condemned the "heinous and appalling" Westminster terror attack.
Travis Frain is recovering in hospital and has posted a photo to Twitter of Prince Charles by his bedside.
Acting Commissioner Craig Mackey led new policemen and women in paying their respects at a passing-out parade in Hendon, north-west London.