Tom is one of the leading practitioners in this area. In 2018, the Law Commission invited him to be one of only two barristers on their expert panel assisting it on the revision of the Law of Wills. In 2017, he scored a double-win in Hives v Machin: he convinced the judge that the inconsistent authorities on s. 33 Wills Act 1837 should be resolved in his client’s favour, and also destroyed the credibility of the other side’s witnesses in cross-examination. He consistently appears in major contentious probate and Inheritance Act 1975 cases. In 1975 Act claims, he has recently acted in a trial in the Family Division by a co-habitee against her fiancé’s £20m estate (settled before judgment), a claim by a second-wife (in a short marriage) against her husband’s £30m estate (settled at FDR), a high-profile claim by a co-habitee in an estate worth tens of millions, and represented a widow in a claim also against an 8-figure estate. In 2016 he successfully represented a Viscount and his sisters in a claim against their father’s estate. In Will cases, he has successfully overturned wills on the grounds of forgery Supple v Pender , lack of capacity Re Anker-Petersen  and Re Harris  and want of knowledge and approval Re Harris .
He also much sought-after for his advice on the interpretation of wills, and the administration of estates.