Inheritance disputes in England and Wales have surged to record levels, with 1,217 probate lawsuits filed at the High Court in 2025—up 13% year-on-year. The spike correlates with rising asset values, creating larger estates for heirs to contest. In Q4 2025 alone, 342 claims were issued, the highest quarterly volume in a decade, per litigation intelligence firm Solomonic. Legal experts attribute the rise to complex family structures, cognitive decline among the elderly, and heightened litigation willingness. Withers’ Dawn Goodman noted disputes often stem from “greed, need, anger, disappointment, and jealousy,” exacerbated by modern blended families and informal arrangements. Stewarts’ James Price highlighted that rising wealth and memory issues make estates “far more vulnerable to challenge.”

High-profile cases underscore the trend. A man attempting to disinherit siblings via a self-drafted will was stripped of a £434,000 inheritance after a court found his mother—suffering delusions—lacked capacity to sign the document. Another case involved grandsons losing a multimillion-pound farm inheritance after a secret recording proved their grandmother was mentally sound when altering her will. Lawyers warn that blended families and second marriages create “faultlines” between heirs, complicating traditional wills. A 74-year-old man received a 25% estate share after his mother’s will failed to adequately provide for him amid divorce fears.

The £434,000 inheritance case exemplifies how contested wills often hinge on mental capacity assessments. With 1 in 11 over-65s in the UK living with dementia (NHS data), cognitive decline is a growing litigation catalyst. Probate disputes typically settle pre-trial, but court filings represent the “tip of the iceberg,” said Hugh James’ Roman Kubiak. The trend reflects broader societal shifts: older generations’ accumulated wealth and evolving family dynamics. Experts caution that without clear estate planning, even minor disputes risk escalating into costly legal battles.

This inheritance disputes surge underscores the need for proactive legal frameworks. As estates grow more complex, regulators and firms must address gaps in will validation processes. For now, lawyers brace for continued volatility, with families increasingly weaponizing litigation to claim generational wealth.