In September 2014, the LHCb collaboration created an office with a mandate to advise and assist on issues related to Early Career, Gender & Diversity (ECGD). This includes several activities within the collaboration: helping early-career physicists succeed, both within academia and out-side high-energy physics; collating annual statistics on the gender balance in the collaboration; helping inform the collaboration about topics related to ECGD; listening to and advising colleagues who feel that they are the victims of harassment, discrimination, or other inappropriate behaviour. We discuss the activities of this office and experience gained during its first years of existence.