KBR provides engineering, construction and services to support the energy, petrochemicals, government services and civil infrastructure sectors. It was floated on the New York Stock Exchange in November 2006 with a valuation of $2.8bn.
FD-LLM will focus on UK national political audiences. The account was won and is being run by MD Simon Elliott.
FD-LLM has also been retained by R3, the Association of Business Recovery Professionals. The association represents insolvency, business recovery and turnaround specialists in the UK.
FD-LLM lost a number of key staff last year and is now making a concerted effort to ensure it is still a threat on big public affairs pitches.
Former Sunday Times political editor David Cracknell started as chairman of FD-LLM earlier this year.