McNamara, 44, works for a technology consulting company and lives with husband John, 49, who owns a marketing consultancy, and their two children, Helena, six, and Felix, four.
Wolff had studied architecture and design and had been working in a small London design partnership when they met and started their groundbreaking brand consultancy Wolff Olins in 1965.
But soon afterwards he joined the Spanish-based international brand consultancy Saffron, started by a Wolff Olins alumnus, Jacob Benbunan, as a hands-on chairman.
"The contagion risk to other economies is significant; we think that Grexit would lead to the reintroduction of a currency-risk premium and higher peripheral bond yields," said the consultancy Oxford Economics.
Now: Walker went on to establish his own public relations consultancy, with clients from the chemical and plastics industries.
The decision follows a two-month review by new chief executive, Samir Brikho, which concluded Amec should focus on providing engineering and consultancy services to the energy, mining and selected industrial sectors.
For that service, Tesco paid PwC £10.4m in the last financial year – plus another £3.6m for other consultancy work.
In the same year he was made an MBE and married Ann McTegart, a fellow party activist with whom he later set up a campaign, communications and fund-raising consultancy.
He is also founder of co-creation consultancy Collaborative Change, a D&AD Trustee and author of an upcoming book based on his behaviour change work.
I choose not to do personal consultancy for the food industry because it is often harder, though not impossible, to put similar safeguards around advisory work and the discussions are not published in the peer-reviewed way that we do for research findings.
He spent three and a half years at the consultancy Frontier Economics before returning – "without a moment's hesitation" – to run the IFS.
