Withers specializes in tax, trust and estate planning, as well as litigation, employment, family law, and other legal issues for individuals.

[2] Withers has offices in Hong Kong, Singapore, Tokyo, Cambridge, Geneva, London, Milan, Padua, Boston, British Virgin Islands, Greenwich, Los Angeles, New Haven, New York City, San Diego, San Francisco, and Texas.

By 20 November 2021 Withers were reported to have paid Cox more than £800,000 in fees in a period in which he retained his parliamentary seat of Torridge and West Devon.

A video appearing to show Cox using his parliamentary office for a Zoom meeting was published by Sky News which also featured Lauren Peaty, a Senior Associate with Withers.

[6] Cox explained he could not remain part of the Zoom meeting, which also included Andrew Fahie, Premier of the British Virgin Isles.