Sustainable transport charity the Campaign for Better Transport is to strengthen its volunteer induction procedures after an intern sent out an email to supporters asking for evidence that the Conservative Party was "hostile to good public transport".
Harry Phibbs, a Conservative councillor on Hammersmith & Fulham Council, said he had complained to the Charity Commission. He wrote on the ConservativeHome blog: "Here is a charity behaving in the most blatantly partisan manner."
A spokeswoman for the commission said CBT's trustees had been asked to read the regulator's campaigning guidance and send "a clarification with regard to meaning" to the recipients of the email.
Stephen Joseph, executive director of CBT, said the email had not been seen by any of the charity's staff before it was sent and did not reflect the intentions of CBT. He said its campaigning followed commission guidelines and a clarification email had already been sent. "We have strengthened our volunteer-induction procedures and are confirming this to the commission," he added.