How supplier dependency creates business risk

Suppliers create value — but they also create dependency. Every recurring relationship is a decision you've made to let an external organisation deliver something your business needs.

The forms dependency takes

• Operational — you can't function without them (IT, telecoms, core software)
• Financial — a pricing change materially affects the P&L
• Contractual — a long notice period limits your flexibility
• Knowledge — they hold context your team doesn't

How to see it clearly

1. Put every supplier in a register with a criticality rating
2. For each critical supplier, ask: what happens on day one if they stop?
3. Note whether an alternative exists and how quickly you could switch
4. Track spend and renewal dates so surprises don't become emergencies

How to reduce it

• Assign a named internal owner for every critical supplier
• Document what the supplier does and how you'd replace them
• Review critical suppliers at least twice a year
• Keep contracts, renewals and reviews linked in one place

The register is the starting point. See the Supplier Register Template.