London · Specialist Finance Advisory

Build a close that works
for you

A specialist finance and accounting advisory practice, built for the close, consolidation and reporting needs of complex businesses — PE-backed groups, asset managers, and multinationals where the basics aren't basic.

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About ZSSK

The specialist finance partner for complex groups

ZSSK is a UK-based specialist accounting and finance advisory firm, founded by three senior practitioners with combined experience across Big 4, top-tier UK practice, multinational corporates, and offshore fund management.

We help complex businesses close their books faster, consolidate with confidence, and report with clarity. Backed by a dedicated UK partner team and a global delivery centre.

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Rooted in The City

Our Approach

Three disciplines
One trusted partner

Most accounting firms try to do everything. We do three things, exceptionally well — the things complex businesses cannot afford to get wrong.

Faster, cleaner closes. Group consolidation under any standard. Reporting that tells the story your stakeholders actually need.

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Consolidate

Report

What We Deliver

Services engineered for complex finance

01 / Reporting

Group Consolidation & Financial Reporting

Multi-entity, multi-currency consolidation under IFRS, UK GAAP and US GAAP. Audit-ready financial statements and the technical accounting that complex groups require.

02 / Leadership

Outsourced CFO & Financial Controllership

Senior finance leadership embedded in your business — without the full-time cost. Interim controller cover to long-term CFO advisory for PE-backed portfolio companies.

03 / Transformation

Finance Transformation

ERP and EPM implementation, close acceleration programmes, and operating model redesign. Technical accountants who genuinely understand systems.

04 / Assurance

Audit Readiness & Internal Controls

Pre-audit reviews, controls design and remediation, and audit liaison support. Built on years of working alongside Big 4 audit teams.

05 / Funds

Fund Accounting & Investor Reporting

NAV calculation, investor reporting packs, capital call administration, AML/CDD frameworks. Particular depth in real estate, PE and debt fund structures.

06 / Advisory

Technical Accounting Advisory

Complex transactions, restatements, GAAP conversions, and one-off advisory where the standards leave room for judgement. The work most firms struggle to staff.

Our Differentiator

A global delivery model
Engineered for the mid-market

Every engagement is led and owned by our UK partners — the people you meet are the people who deliver. Supporting them is a dedicated Centre of Excellence in South Africa, staffed by SAICA-trained chartered accountants — a qualification benchmarked alongside ICAEW and ACCA.

It's the same delivery model the Big 4 firms have used for years to support their largest engagements. The difference: we've built it for mid-market businesses — institutional-grade rigour at a price point that genuinely works for growing groups.

Cape Town · Centre of Excellence

The Founding Team

Senior practitioners
Direct engagement

ZSSK was founded by three directors whose combined experience spans Big 4, top-tier UK practice, multinational corporates, and offshore fund management.

Salman Khalid

FCCA · Director

Ex Big-4 · PE Specialist

Deep technical accounting expertise across IFRS and US GAAP, with a track record of delivering finance transformation programmes for global corporates and listed groups. Specialist in group consolidation, ERP/EPM implementations, and CFO advisory for multi-billion-dollar groups.

Sean Baillie

CA(SA) · Director

Ex Big-4 · Real Estate

Experience spanning global real estate investment management, with a particular focus on fund-level reporting, investor relations, and the financial complexity of cross-border real estate vehicles. Brings institutional-grade reporting discipline from one of the world's leading real estate asset managers.

Charles Vorster

CA(SA) · Director

Ex Big-4 · Asset Management

Director of Operations experience in offshore fund administration, including private equity, debt and real estate vehicles. Deep expertise in UK GAAP, US GAAP and IFRS consolidation, AML and client due diligence frameworks, and the regulatory environment of Channel Islands fund structures.

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