Subcontracting Security Work: How to Protect Your Margins, Compliance and Reputation

Almost every growing security company reaches the point where it cannot cover everything with its own guards. A client wants national coverage. A one-off event needs 40 officers for a weekend. A contract lands in a region where you have no staff. So you subcontract.

Done well, subcontracting lets you say yes to work you could never staff alone, smooth out demand, and grow faster than your direct headcount would allow. Done badly, it eats your margin, hides compliance risk, and puts your reputation in the hands of guards you have never met.

This post covers how to subcontract security work without losing control of the three things that matter most: your margins, your compliance, and your name.

Why Companies Subcontract — and Where It Goes Wrong

The reasons to subcontract are sound:

• Coverage — filling shifts in regions or at short notice where you have no guards
• Scale — staffing large events or multi-site contracts beyond your own workforce
• Specialism — bringing in dog handlers, close protection, or other skills you do not hold in-house
• Flexibility — meeting a demand spike without hiring permanent staff you cannot keep busy

The trouble is that when a shift is subcontracted, you hand over the one thing that defines your business: control of what actually happens on-site. And unless you have deliberately built the systems to keep visibility, you lose it.

Three problems tend to follow.

Problem One: Margin Erosion

Subcontracted work is almost always less profitable than work you deliver yourself, because you are paying another company's margin on top of the guard's wage. That is fine — a smaller margin on business you could not otherwise take is still a good deal — provided you know exactly what the number is.

Where it goes wrong is when the true cost is invisible. Overtime you did not authorise. Hours billed that were not worked. A subcontractor rate that quietly creeps up. Admin time spent reconciling their invoices against your records by hand. Each of these nibbles at a margin that was thin to begin with, and because subcontracted work sits outside your normal systems, nobody notices until the contract is barely breaking even.

The fix is visibility. You need to know, per shift and per site, what you are charging the client, what you are paying the subcontractor, and therefore what you are actually keeping. If that number lives in your head or in a spreadsheet you update monthly, you are flying blind.

Problem Two: Compliance Risk

When you subcontract, the client still holds you responsible. If a subcontracted guard turns out to be unlicensed, unvetted, or was never actually on-site, it is your name on the contract and your reputation on the line — not the subcontractor's.

That creates real exposure:

• Licensing — can you prove every subcontracted guard held a valid SIA licence for the role they worked?
• Right to work and vetting — have the checks that BS 7858 expects actually been done, or are you taking the subcontractor's word for it?
• Presence — was a guard genuinely on-site for the hours billed, or are you paying for coverage that never happened?
• ACS — subcontracted work still falls within the scope of your Approved Contractor Scheme assessment. Weak oversight of subcontractors is exactly the kind of thing that costs you points.

"The subcontractor said it was fine" is not a defence. If you cannot evidence it, you cannot rely on it.

Problem Three: Reputational Risk

Your client does not care whether the guard on their site is your employee or a subcontractor's. To them, that guard is you. If they turn up late, out of uniform, or not at all, it is your relationship that suffers.

This is the risk that is hardest to quantify and most damaging when it lands. You can lose a contract you spent months winning because of a subcontracted guard you never met, on a site you rarely visit, having an off day. Without visibility of what is happening on the ground, you find out only when the client calls to complain — or to give notice.

How to Subcontract Without Losing Control

The answer is not to avoid subcontracting. It is to bring subcontracted work inside the same operational discipline as your own.

Set clear standards in writing

Before any subcontractor covers a shift, agree the standards: licensing and vetting requirements, uniform, reporting expectations, escalation routes, and the consequences of no-shows. Put it in the contract, not in a phone call.

Insist on the same evidence you generate yourself

Do not accept a lower standard of proof from a subcontractor than you hold your own guards to. If your guards clock in with GPS verification, log incidents digitally, and complete patrols on the record, subcontracted guards on your contracts should do the same. The simplest way to enforce that is to have them work through your system.

Bring subcontractors onto your platform

This is the practical heart of it. When subcontracted guards clock in and report through TacDesk, the wall between "your" work and "their" work disappears:

• GPS-verified clock-in proves a subcontracted guard was actually on-site, for the hours you are being billed — so you never pay for coverage that did not happen.
• Digital incident reports and patrols give you the same on-the-record visibility of subcontracted shifts as your own, in real time, not via a monthly summary.
• Financial reporting shows charge rate against pay rate per shift and per site, so you can see your true margin on subcontracted work at a glance — and catch erosion before it compounds.
• Invoice reconciliation becomes trivial, because the hours you are billed can be checked against verified clock-in records instead of taken on trust.

You are not just outsourcing the shift and hoping. You are extending your own operating standard to whoever is delivering the work.

Review the numbers regularly

Look at subcontracted contracts on their own, at least monthly. What is the real margin? Are there recurring no-shows or overtime overruns? Is a particular subcontractor consistently below standard? The data should make the decision to keep or drop a subcontractor obvious.

The Bottom Line

Subcontracting is a lever for growth, not a liability — as long as you keep control of the three things that define your business. Protect your margin by knowing your true numbers per shift. Protect your compliance by insisting on the same evidence you generate yourself. Protect your reputation by having real-time visibility of every guard on every site, whether or not they are on your payroll.

The companies that scale successfully through subcontracting are not the ones that hand over control. They are the ones that never gave it up in the first place.

See how TacDesk gives you full visibility of subcontracted shifts, margins, and compliance in one place — start a free trial at tacdesk.co.uk. No setup fees, no contracts, cancel any time.