[1] Williams trained for law in Chancery Lane and worked from 1989 through 1994 at Cameron McKenna in London as a litigator defending architects, accountants, actuaries, insurance brokers, and Lloyd’s underwriters in civil suits.
[1] At Chorleywood―a large evangelical congregation in the C of E―he was assigned to develop a missional growth strategy to address a passive laity and a 10 percent annual membership turnover rate.
"[4] They were designed to reach unchurched groups, including youth, the elderly, prisoners, the disabled, special-needs adults, people experiencing homelessness, immigrants and others.
[1] The size of these groups enabled more leaders to be identified and develop their leaderships skills, management expert Gary Hamel has observed.
[2] The MSC model attracted international interest and Williams co-authored a book on the concept entitled Breakout: One Church's Amazing Story of Growth Through Mission-Shaped Communities.
Williams grew the church to 1,200 in attendance at three Sunday services in addition to a Trinity offshoot in Darien.
[6] In 2018, Bill Murdoch, the retiring bishop of the Anglican Diocese in New England, asked Williams to agree to be considered as his successor.
[7] He was consecrated by ACNA Archbishop Foley Beach at a Catholic church in Amesbury, Massachusetts, on March 16, 2019, and enthroned at All Saints Cathedral the following day.