Jonathan Lief is a trusted financial adviser supporting private clients, founders and owner‑managed businesses with accounting, tax and practical financial decision‑making.
Jonathan works closely with clients to provide clear, dependable advice that combines technical rigour with commercial pragmatism. His approach is focused on helping clients remain compliant, understand their financial position and make informed decisions with confidence, particularly as their businesses grow or evolve.
Jonathan is Founder of NewLief, a London‑based firm of ICAEW Chartered Accountants advising private individuals and entrepreneurial businesses on accounting, tax and related advisory matters. NewLief offers a wide range of services, combining strong technical expertise with a personal, responsive and relationship‑led approach. The firm is also an Authorised Corporate Service Provider (ACSP) and is able to assist with company secretarial matters.
Jonathan trained and qualified as a Chartered Accountant at RSM, a top‑ten accounting firm, where he worked across audit and assurance with a diverse client base. He later moved into senior in‑house finance roles within fast‑growing consumer and technology businesses, including Deliveroo and Moonpig, gaining first‑hand exposure to the operational, reporting and scaling challenges faced by modern founder‑led companies.
Through NewLief, Jonathan works predominantly with founders building online and direct‑to‑consumer businesses, including e‑commerce and marketplace brands. He supports clients across accounting, tax compliance and ongoing financial insight, helping them review performance, plan ahead and build sustainable growth.
As a Consultant to the Spencer West Private Office, Jonathan works alongside legal and professional advisers to support private clients with accounting, tax and financial governance matters, particularly where clarity, responsiveness and long‑term planning are essential.