After three years as an accountant in general practice undertaking accounts preparation work and auditing, Nicholas has specialised in Forensic work for the last 26 years, principally in accounting, quantum and valuation disputes. Nicholas has given oral testimony 40 times, 10 times in the Courts (England, Cayman Islands) and 30 times in Arbitration (Brussels, Geneva, London, Paris, Singapore, Stockholm, Vienna, UAE, Washington). He has been commended by the English High Court, and his work in arbitration has also been publicly reported on occasion.