SJD Accountancy

SJD Accountancy is a UK‑based accountancy firm that provides accounting, tax, payroll and advisory services to individuals and businesses. It operates under the SJD brand and is part of a network of affiliated accounting firms that includes Nixon Williams and Parasol Group. The firm delivers compliance support and financial management assistance to its clients across various sectors. Its core activity centres on helping customers meet regulatory obligations and manage their financial affairs efficiently.

The firm’s affiliation with Nixon Williams and Parasol Group means it shares the parent company’s IT infrastructure with these sister organisations. This shared technology environment was highlighted during a cyber security incident in January 2022, when attackers targeted the common infrastructure and caused significant system disruptions. The incident prompted the involvement of external IT security specialists and led to customer notifications by email, resulting in prolonged downtime and public frustration. Security experts characterised the event as consistent with typical ransomware attacks affecting small and medium enterprises.

Structurally, SJD Accountancy is linked to Nixon Williams and Parasol Group through a common parent company, as indicated by the reference to shared parent company infrastructure in the incident report. Details regarding the exact ownership structure, equity holdings or organisational hierarchy beyond this affiliation are not disclosed in the available sources. Consequently, any further specifics about the firm’s ownership or subsidiary relationships remain undetermined based on the provided information.