Engineering and environmental consultant Wardell Armstrong has appointed Colin Brown as managing director. He succeeds Jeff Smith, managing director for 12 years, who now becomes chairman.
John Russell has joined RPS Transport as an associate.
He was formerly an associate with Peter Brett Associates.
Sam Larkins has joined as a consultant from Halcrow. Sarah Taylor and David Chapman have joined as graduates.
Alan Morris has led a management buy-out at excavation contractor Trelanmex.
The London borough of Barnet has appointed councillor Andrew Harper as a new design and heritage champion.
White Young Green has made 16 key promotions across the company. They include the promotion of Graham Jenkins and Jonathan Vining to regional director; Andrew Strange, Sarah Hawkins, Al Harris and Gary Morris to associate director; Alex Robinson, Anna Penn and Chris Hays to associate. Trevor Moody, Rob Pearson and Jeff Richards have been promoted to principal planner.