Aristone Solicitors

Aristone Solicitors is a full-service London law firm established in 2018, led by Directors Mariyam Ferreira Loh and Patrick Smith. The firm advises high-net-worth individuals, professional sports clubs, NGOs, and corporate clients across litigation and dispute resolution, contentious probate, wills and probate, corporate mergers and acquisitions, immigration, and child and family law.

The practice was built on the understanding that clients instructing a law firm at a critical moment deserve lawyers who are technically excellent, properly prepared, and genuinely accountable for the outcome. That principle has shaped every hire, every process, and every client relationship the firm has built. The firm is regularly instructed by solicitors, accountants, and wealth managers on behalf of their clients — a measure of the confidence the professional community places in the quality of Aristone's advice.

The litigation and dispute resolution department, led by Director Patrick Smith who serves concurrently as the firm's COLP, handles complex civil and commercial disputes with methodical precision. The team is experienced in high-stakes contested matters and approaches each case with the preparation and strategic clarity that serious litigation demands.

Contentious probate is a particular area of strength, led by Director Patrick Smith. The firm regularly advises executors and beneficiaries in relation to disputed wills, executor removal, inheritance act claims, and family provision matters — including estates with a value exceeding £20 million. The team brings technical depth and considered judgement to proceedings that are invariably complex and consequential.

The wills and probate department serves high-net-worth individuals and families across the full spectrum of estate planning and administration, including estates of significant value and complexity. The corporate practice advises on mergers and acquisitions for business owners and investors who require lawyers with sound commercial judgement alongside legal rigour.

The child and family law department acts for high-net-worth individuals — including professional athletes and their families — in proceedings where the personal and financial stakes are at their highest. The firm has appeared in the Family Division of the High Court and successfully obtained enforcement in contested proceedings, reflecting the team's capability and willingness to pursue the right outcome at every level of the court structure.

The immigration department was established and developed by Director Mariyam Ferreira Loh, who remains closely involved in the firm's most complex matters. The team includes a solicitor holding OISC registration and advises an exceptionally varied client base — from professional sports clubs, pharmaceutical companies, care home groups, and defence and security sector businesses to high-net-worth individuals, professional athletes, and pilots. On the corporate side, the firm manages the full spectrum of business immigration requirements: sponsor licence applications, skilled worker sponsorship, global mobility, intra-company transfers, and ongoing compliance audits for organisations with significant and continuing immigration obligations. On the personal side, the firm is trusted by individuals for whom precision and discretion are non-negotiable. The firm welcomes instructions from corporate clients, professional intermediaries, and organisations with complex international mobility requirements.

The firm's team works in English, Portuguese, and Russian. Aristone Solicitors is regulated by the Solicitors Regulation Authority and is a member of Resolution.