Sarah Jane Boon

Sarah Jane Boon is a Partner in the family law team at Charles Russell Speechlys in London, where she has built a highly regarded practice advising high and ultra-high-net-worth individuals on the full spectrum of private family law matters. She specialises in complex financial remedy proceedings on divorce — including cases with substantial assets across multiple jurisdictions, arguments over ring-fencing of inherited wealth, and the weight to be given to pre- and post-nuptial agreements — as well as financial claims following an overseas divorce brought before the English court. Sarah Jane also has a significant private children law practice spanning parental arrangements, relocation of children across jurisdictions, and Schedule 1 Children Act claims; she acted for the mother in GN v MA [2015] EWHC 3939 (Fam), understood to have resulted in the highest ever Schedule 1 order for both housing provision and periodical payments. Listed in the eprivateclient 35 Under 35 in 2015 and the Citywealth Leaders List in 2018, she is ranked Band 3 in Chambers UK 2026 for Family/Matrimonial Finance: Ultra High Net Worth and is a Legal 500 Leading Partner for 2026.