Firm Profile > Keystone Law > Belfast, Northern Ireland

Keystone Law
Northern Ireland

Corporate and M&A Tier 2

Keystone Law acts for listed and unlisted clients, but has been particularly active in public company M&A. The team advises on domestic and cross-border transactions, with particular expertise in the aerospace and healthcare sectors, as well as handling the corporate aspects of real estate financing and forward funding. 'Very capable' Belfast office head John McMahon leads the practice. London-based consultant JP Irvine has strong experience acting for major regulated utilities.

Practice head(s):

John McMahon

Other key lawyers:


The team is small and provides a high level of personal attention.

John McMahon has a wealth of experience and an eye for the commercial priorities in every transaction.

A very dedicated and capable team who integrate across various aspects of the business. Led by John McMahon, they are both pragmatic and commercial, and very focused on delivering for their clients.

John McMahon and his team are experienced practitioners. They know what the issues are and flag them for discussion in advance. They are not “learning on the job” – they know the job inside out. Experience, locally, nationally and internationally, means that they don’t lead clients down cul-de-sacs.

Keystone Law provides good value advice.’

Danny McKay and John McMahon provide practical and commercial advice. JP Irvine is also a very hungry and commercial lawyer, who seeks to truly help facilitate deals and make things happen, which is indicative of Keystone Law’s progressive, value-adding service.

Key clients

Tayto Group

Hatch Brothers


Causeway Aero Group

Kilmona Property

Giants Park Belfast

Northside Regeneration

Genesis Aerotech

Commercial property Tier 4

The 'very capable' team at Keystone Law is noted for its advice to developers on major local leisure, residential and student accommodation projects. The office sector is also an area of strength, with the team regularly acting for landlords and tenants on leasing arrangements. The 'excellentDanny McKay leads the team. Jim Houston, whose areas of expertise include advising national and international funds on the acquisition of Northern Irish property portfolios, is also a key contact.

Practice head(s):

Danny McKay

Other key lawyers:


Danny McKay and solicitor Jonny Mullan always seem to be ahead of the curve, flagging well in advance what the issues are and possible solutions. They always seem to have matters in hand with their commercial and pragmatic approach.

Keystone Law is excellent, head and shoulders above competitors.

Key clients

Hatch Brothers Limited

Giant’s Park Belfast Limited

Causeway Asset Management

Allen & Overy LLP

Johncorp (No3) Limited

Straben Limited

Photo Name Position Profile
Mr Jim Houston  photo Mr Jim Houston
 Richard McLaughlin  photo Richard McLaughlin