First Capital Connect expects to run a full peak service this evening between Bedford and Brighton which passes through St. Pancras. The route had experienced delays and cancellations throughout the day.
More top news
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.