The first two stages happen before anyone knows you are thinking about it
It starts with a baseline. Not a marketing valuation and not a price, but a defensible range for the business in its current shape, built from the contracted and project revenue split, the certification scope, the customer spread and the degree of owner dependency, meaning how far the business relies on you. It takes days rather than weeks and it is entirely private. Everything that follows is a decision made against that number.
Then preparation, which is where most of the value is either created or lost. The contract schedule assembled and gaps closed, the certification file current with nominated individuals correctly recorded, three years of accounts with the recurring and project split visible, the employment file complete, and where possible a second technical authority named and qualified. The structural parts of that take far longer than the documentary parts, which take weeks.
Owners consistently underestimate this half and overestimate the rest. By the time a buyer is in the room the price is largely decided, because the things being valued are already facts. What follows is a process for discovering who will pay the most for those facts, not for improving them.
Approaching the market is a controlled process, not an advertisement
The business goes to a defined list of buyers under a blind profile: sector, approximate region, revenue band, contracted share, certification scope, and nothing that identifies the company. Interested parties sign an NDA, a confidentiality agreement, before anything more is released, and you decide who is excluded before the list is used, which is how a competitor two towns away never learns anything.
Meetings follow with the parties who are serious, and offers follow the meetings. This stage takes months rather than weeks in a normal process. It is worth understanding why more than one buyer matters: a single offer cannot be tested against anything, and the range between offers on the same fire safety business can be wider than owners expect, because different buyer types value the contract base differently.
Two practical notes about this stage. A good process holds the interested parties roughly together rather than letting the quickest set the pace, because parallel conversations are what produce a range instead of a single number. And the seller's job throughout is to keep trading well, since a dip in the figures while a process runs is read as the business reacting to the distraction, and it gets priced accordingly.
Heads of terms then record what has been agreed in principle: price, structure, how much is payable at completion, what is deferred and on what measure, and what is expected of the seller afterwards. It is not binding on the main terms, but it sets the frame for everything that follows, so it is worth taking time over rather than treating as a formality.
Diligence is the longest stage and it moves at the speed of your paperwork
Due diligence, the buyer's detailed check before it commits, is heavier in a certificated business than in most trades: certification records and audit history, every service agreement with renewal terms, commissioning documentation, engineer qualifications, three years of accounts, employment records, insurance and claims history. It is usually the longest stage, and the single biggest variable is whether the seller assembled this material in advance or is producing it under pressure.
Legal work runs alongside it, and where staff transfer under TUPE, the rules that move employees across on their existing terms, as they do in a sale of the business's assets rather than the company's shares, it has to be handled on a timetable rather than at the end, since consultation obligations are real and late consultation is a problem nobody needs at that stage. Completion is the last step. For tax, it is normally the date the sale contract becomes binding with no conditions left that fixes the year, not the date terms were agreed in principle.
On which point, one piece of arithmetic was worth doing at the start of 2026. The tax rate under Business Asset Disposal Relief, which lowers the tax on a sale for owners who qualify, went up from 14% to 18% in Apr 2026, and a process started in January would not ordinarily have completed before then. Separately, from April 2026 the £2.5m allowance for combined business and agricultural property relief has taken effect, capping what passes free of inheritance tax on an estate, which is another reason a number of owners are reviewing timing. Both are conversations for your own tax adviser, and neither is a reason to compress a process that needs its months.
Diligence moves at the speed of your paperwork, and the biggest variable is whether the material was assembled in advance or is being produced under pressure.
Begin With Stage One
Stage one takes under 15 minutes. Our valuation tool returns a confidential baseline range for your fire safety business, and everything after it is your decision.
Try the free calculatorIf you are a few years from selling, Nick Hunt can help you plan and do this work as part of the Reads Pre-Sale Programme.