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McElwaine Security

McElwaine Security engaged Roger O’ Shea of Merc Consulting at short notice to assist us during a period when we had an illness affecting a key Director of the business.


Roger joined the management team and has worked in the business over the last year and has focussed on day to day functions across the following areas,


Operational Management

Staff reviews and weekly performance meetings 

Financial Management

Sales & Business Development

Business Strategy & Recruitment


Whilst working within the Company, Roger has been a great addition to the team and has led the Change process across the business and he has brought with him a wealth of experience. I would have no hesitation in recommending Roger to any business owner or manager even if it’s only to provide an outsiders birds eye view of your business. 


Jason McElwaine MD.

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Blue Wall Technologies

Blue Wall Technologies Ltd engaged Roger O’ Shea of Merc Consulting to review our business and plan and deliver a re-launch Strategy for the Company.

Over the last year he has worked with me in the business on a weekly basis and we have achieved everything that we agreed would be delivered and the change process is now complete and I am 100% happy with his input and delivery.

He has become a great sounding board for me personally and his experience, following a long and successful business career, has been invaluable and I will continue to use his services into the future.
I have no hesitation in recommending Roger to any business owner.

Derek Tebay

Managing Director

Power Right

Roger O’ Shea of Merc Consulting has been working with the team here in Power Right for the last 5 months and during this time, Roger has been assisting us in the following areas,

  • Sales Team Management and Business Development,

  • Developing a new Line Management Team

  • Implementation of a New Software Management System.

  • Strategic Business Development.

  • General Business Assistance & Advice.


We would highly recommend Roger and his team in Merc Consulting to any Security business owner as their experience and knowledge of all aspects of the Industry is invaluable and their hands-on approach is unique and provides us with a listening ear and their availability to us at all hours is a major benefit.


Richard O’ Boyle MD

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Phoenix Alarms

I have known Roger O’ Shea for over 25 years and he has acted as a business consultant to my business Phoenix Alarms for 6 years prior to my selling the business. 

During that time Roger and Merc Consulting has been invaluable to me, in assisting me in managing the business as a going concern and forward planning for my retirement. 

I would have no hesitation in recommending Roger and suggest that all businesses need an outside view, to better manage their business and a professional consultant is a very worthwhile investment.

Colm McCabe MD

Northwest Alarm Systems

I contracted Roger O’ Shea of Merc Consulting 11 months ago to assist me in restructuring my business and he has transformed how we run the business on a day to day basis. Roger now carries out weekly meetings with myself and my staff either virtually or in person as required and he monitors our performance across Sales, Installations, Margins, Pricing of contracts and Quotations.

In addition, he is working with our Computer system provider to ensure necessary changes are implemented.

It would be well worth any company Owner’s time to investigate bringing in a company like Merc Consulting to get an overview of your business. I would highly recommend Roger and his team.

Jimmy Melly MD



Dowling Security Systems

We engaged Merc Consulting to source a buyer for our business.

Merc’s knowledge of the Market was crucial in helping us to reach the right audience.  John & Roger were astute, well informed & decisive in guiding us through every stage of the process.

Merc are a pleasure to deal with, dependable, supportive, and highly efficient in delivering for us a great result.

We highly recommend them.


Joe & Mary Dowling

Dowling Security Systems

O'Mahony Fire and Security

We were recommended to Merc Consulting when we decided to sell our business.

John, Roger and the team were diligent in sifting through the enquiries, and identifying a shortlist of potential buyers for us.  They were in our corner during all stages of negotiation, and we were very satisfied when an agreement was signed. 

There were many stages in the purchase process, all of which were supervised by Merc, and without which we would have been overwhelmed, as its not a task for the layman.

We’re delighted to have chosen Merc and would heartily recommend them to any business owner even if it’s just to provide an objective overview of your business. 

Sean O’Mahony MD

O’Mahony Fire & Security

Active Technology

I hired Merc Consulting to identify a suitable buyer for my company.

Roger, John and the team listened to our thoughts on a preferred purchaser, and always acted in our best interests. 


Merc were professional & proactive in identifying suitable purchasers, and once a deal had been agreed, they had full oversight of all stages of the process, and guided us all the way to a successful conclusion.

They kept all the stress & frustration away and are a pleasure to work with.

I would be pleased to recommend them.

Ultan McAvinue MD

Active Technology

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Wilson Security Systems

We engaged Roger and Merc Consulting to broker the successful sale of our company, Wilson Security, in 2021. From the outset Roger was professional and brought the depth of his experience in business and the industry into the process.

Roger used his expertise to advise and guide us, we had complete trust and confidence in him to represent our brand and drive the sale of our company forward in a professional and confidential manner.

Mere Consulting afforded us the opportunity to continue working on our business while Roger negotiated the sale with interested potential buyers. He managed all our professional advisors to ensure a successful and timely delivery of the sale.

We would highly recommend Roger and Merc Consulting.

Mark Wilson, Director

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MC Alarms

Following on from the completion of the sale of my business MC Alarms to Network Security, I have no hesitation in recommending Roger O’ Shea of Merc Consulting who brokered the sale on my behalf.  I engaged Roger in advance of the proposed sale and he has guided me through the process which is lengthy and complicated, from start to finish.

Merc Consulting analysed my business and prepared an Information Memorandum, engaged the market and drew up a shortlist of interested parties and engaged with them until we settled on a heads of agreement with Network. Following that Merc Consulting have attended all meetings, managed the process and introduced outside Financial and HR advisors that were required to complete the sale.

Roger and his team handled all the negotiations with all parties to the deal, which left me free of any pressure and enabled me to have time to consider all the implications of this major life changing decision.


Vincent Cooney MD  

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