The Save Earls Court, West Kensington and Gibbs Green estates group, which is campaigning against the redevelopment of Earls Court and surrounding areas, told PRWeek that Edelman's office block was locked, preventing people from entering or exiting the building.
Chair of West Ken & Gibbs Green Community Homes, Keith Drew claimed that workers from other companies in the same office block were also affected.
Rumfitt denied that Edelman had any involvement in the decision to lock the doors of the shared building.
Police arrived at the scene as Slaughter exchanged text messages with Rumfitt asking him to meet campaigners, which he then did.
Edelman said in a statement: 'Along with four other organisations, Edelman received a small, well-behaved and peaceful protest related to our work on the Earls Court development on Wednesday. We were pleased to go down and meet with the protestors, listen to their concerns and continue the dialogue we have been engaging in with them over the past five years. We are proud of our work on the Earls Court development, which guarantees every single one of the residents a new home within the development.’
Rumfitt added that Edelman did not call the police about the matter.
Drew contended that Edelman ‘trumpets its international awards and boasts an 'Edelman Trust Barometer'. Yet, when a few council tenants tried to deliver a letter to its managing director of public affairs for London, he locked down a major headquarters building in the heart of the capital’. This is an allegation Rumfitt denies.
Drew added: 'Edelman's client, CapCo, has blown £40m on this futile enterprise, so I wasn't surprised [Edelman’s] directors were too ashamed to come out. I was delighted we so spectacularly embarrassed Edelman.'
Earlier in the day, the group which includes tenants of the West Kensington and Gibb's Green estate and other local residents, handed the petition to the Department for Communities and Local Government, Capco and TFL, which is a partner in the development.