A City Law Firm

What A City Law Firm does

A City Law Firm, trading as All In 1 Advisory (legal entity: Allin1 Advisory Limited), is a private UK law firm headquartered at 1 Cornhill in the City of London. Founded in 2008 by Karen Holden, who serves as Founder and Managing Director, the firm operates as a Chambers-ranked, SRA-regulated (SRA number 8011239) boutique practice with 11-50 employees. It is independently owned with no disclosed external funding, parent company, or M&A history. The firm is structured around four core practice areas: Innovation and Technology Law (covering blockchain, web3, crypto, and AI-related legal work for disruptive ventures and regulated entities), Investment to Exit / Commercial and Corporate (supporting UK founders from funding through exit), Scale Up Packages (entrepreneur-led investment and growth support), and Trusted Personal Advisors (employment law, contracts, redundancy, settlement, mediation, disputes). Additional services include Online Reputation and Crisis Management, Debt Collection, and direct consultation booking.

The firm's go-to-market is sales-led and consultation-driven, targeting UK founders, early-stage startups, and SMEs seeking commercially-minded legal counsel. Distribution is single-channel and domestic, delivered through the London office, with top-of-funnel demand generated via content marketing, articles on emerging technology regulation, and webinars on crisis management and exit literacy. Revenue is generated through bespoke, quote-based professional services fees on legal advisory, transactional work, and bundled scale-up packages, with no publicly disclosed pricing tiers. Customers are distributed across multiple sectors (professional services, simulation technology, digital technology, sustainable housing, web3) with no visible enterprise anchor dependency. The technology stack is conventional for a professional services firm, with no proprietary platform, patents, or disclosed AI/ML capabilities.

The firm has accumulated sustained third-party validation, including Chambers and Partners ranking (2025), Legal 500 Leading Firm status, Elite Business Top 100 for four consecutive years (2022-2026), SME Best Law Firm 2023, IE100 Winner 2024, and M&A Today Global Awards 2026 Winner. No financial figures, funding rounds, partnerships, or M&A activity are disclosed in the source material.

Name

A City Law Firm

Legal name

Allin1 Advisory Limited

Website

https://acitylawfirm.com

Company type

Private

Founded year

2008

Operating status

Operating

Headcount range

11–50 employees

Short description

A City Law Firm (trading as All In 1 Advisory) is a Chambers-ranked, SRA-regulated UK boutique law firm headquartered in the City of London, founded in 2008 by Karen Holden. It provides corporate funding, insolvency, debt recovery, dispute resolution, technology law, and employment advisory services to UK founders, startups, and SMEs.

Ownership category

akta.pro rank

Product category

Legal Services

NAICS

Offices of Lawyers (541110)

SIC

Services-Legal Services (8111)

akta.pro industry

PRIMARYBPAHAAAA

Corporate & Commercial Law

Business & Public Services/Professional Services (Legal, Accounting, Consulting)/Legal Services

SECONDARYBPAHAAAI

Mergers & Acquisitions (M&A) & Securities Law

Business & Public Services/Professional Services (Legal, Accounting, Consulting)/Legal Services

SECONDARYBPAHAAAC

Regulatory & Compliance Law

Business & Public Services/Professional Services (Legal, Accounting, Consulting)/Legal Services

SECONDARYBPAHAAAH

Bankruptcy, Restructuring & Insolvency Law

Business & Public Services/Professional Services (Legal, Accounting, Consulting)/Legal Services

Keywords

• Legal advisory services
• Commercial law
• Technology law
• Employment law
• Debt recovery

Headquarters

HQ city

London

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Others

Revenue model

1. Legal Advisory Services: Professional legal services for UK founders and SMEs covering innovation and technology law, commercial and corporate work, investment to exit support, and employment law. Revenue generated through bespoke legal documents, commercial advice, and ongoing legal support.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

A City Law Firm (operating as All In 1 Advisory) is a UK-based, Chambers-ranked law firm delivering bespoke legal services to founders, SMEs, and emerging-technology ventures. Core practice areas include innovation and technology law, commercial and corporate work (investment to exit), employment law, online reputation and crisis management, debt recovery, insolvency, dispute resolution, and adoption services. Services are delivered through qualified solicitors from its City of London headquarters under Solicitors Regulation Authority (SRA) registration.

Product overview

All In 1 Advisory is a Chambers-ranked UK law firm providing legal services to SMEs and technology founders. The firm operates as a unified legal practice organized around key service areas: Innovation & Technology Law (covering blockchain, web3, and emerging tech), Investment to Exit (commercial and corporate work from funding through exit), Scale Up Packages (entrepreneur-managed investment support), and Trusted Personal Advisors (employment law services). Additional services include online reputation/crisis management, debt collection, and direct consultation booking. The firm is regulated by the Solicitors Regulation Authority (SRA number 8011239) and combines City of London expertise with a tech-forward, personal approach.

Differentiator

Problem solved

Functional benefit

Products and services

• Innovation & Technology Law Tailored legal solutions for disruptive ventures, emerging technology, and regulated entities. Covers blockchain, web3, crypto regulations, contracts, deal structuring, and IP support for technology-focused clients.
• Investment to Exit (Commercial & Corporate) Bespoke legal documents and commercial advice supporting SMEs and founders through the full investment-to-exit lifecycle, with fast and proactive, business-first support.
• Scale Up Packages Investment and exit support packages managed by entrepreneurs who understand investor and buyer expectations, providing support throughout the scaling process from growth through to exit.
• Trusted Personal Advisors (Employment Law) Individual advice on employment law including contracts, redundancy, claims, settlement agreements, mediation, disputes, and debt claims.
• Online Reputation & Crisis Management Legal, strategic, media, and digital expertise for protecting reputation and responding effectively under pressure.
• Debt Collection Debt collection services with associated costs transparency for commercial clients.
• Consultation Services Bookable consultation services for prospective clients seeking legal advice from the firm.

Named customers5 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Scale indicators1 record

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Bird & Bird LLP: International law firm with a leading technology, media, and telecoms practice advising startups to listed tech companies; competes for the same founder/tech-law mandates but at significantly greater scale and geographic reach.
• Cooley LLP: US-headquartered firm with a London office and one of the strongest tech-startup and venture practices globally; an incumbent competitor for UK tech-founder mandates seeking US-style venture representation.
• Goodwin Procter LLP: US firm with a London tech and life sciences practice advising startups, venture investors, and listed tech companies; competes for the same founder/SME tech mandates with cross-border capability.
• Taylor Wessing LLP: International firm with a dedicated technology and innovation group serving startups, investors, and tech companies; overlaps directly with All In 1 Advisory's innovation-and-technology and investment-to-exit offerings.
• Mishcon de Reya LLP: London-founded full-service firm with a strong startup, venture, and emerging-tech practice; a more institutional incumbent targeting a comparable founder/SME client base.

Direct peers

• Keystone Law: London-headquartered, consultant-model law firm serving SMEs, founders, and growth companies with corporate, commercial, and employment work; comparable in size, target customer, and full-lifecycle service ethos.
• Fladgate LLP: London full-service firm with active SME, founder, and corporate work including employment and disputes; comparable firm profile and target customer segment for mid-market UK founders.
• Bristows LLP: London tech and IP boutique advising high-growth technology and life sciences companies, from formation through investment and exit; the closest mid-sized competitor for tech-founder mandates.
• Lewis Silkin LLP: London-headquartered firm with a strong employment law practice alongside creative, digital, and tech sector clients; directly comparable on the employment and tech-SME side of All In 1 Advisory's mix.
• Marriott Harrison LLP: London-based boutique law firm focused on technology, startup, and growth-stage companies, with similar corporate, commercial, and investment-to-exit offerings to All In 1 Advisory's founder-focused practice.

Market position

Strengths1 record

Weaknesses5 records

Competitive moat3 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/aclfforlgbt

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about A City Law Firm