Jim Davidson said he is "pleased there'll be no further action."
"The police have been very thorough. I have no complaints about the police whatsoever," he said.
"I don't think the police are looking for conviction. They are just looking for the truth."
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Uplifting messages greeted commuters on the London Underground a day after the terror attack in Westminster.
Faith leaders from across London say religious communities will "stand together" in the wake of the Westminster terror attack.
Pc Keith Palmer was among the three people killed yesterday in the Westminster terror attack.