Compare evidence against the same brief
A supplier can be excellent at a task that is not actually the problem you need solved. Clear requirements make it easier to compare what is offered, what is assumed and what happens if delivery changes.
Write a common brief: outcome, scope, users, evidence, timing, dependencies, data, service, cost, approvals, change control and exit. Ask each shortlisted supplier to respond to the same facts, then obtain suitable legal, technical or procurement support for material contracts.
Use one comparable supplier brief
- Outcome, success measure, priority and consequences of delay or failure.
- Included work, exclusions, assumptions, deliverables and acceptance criteria.
- People, systems, sites, data, equipment and access the supplier will need.
- Evidence of capability, relevant experience, insurance, capacity and references where appropriate.
- Setup, recurring, usage, support, change, renewal and exit costs.
- Dependencies, handover, continuity, dispute route, ownership and records after the contract ends.
Keep control after signature
- Name an internal owner and define what they can approve.
- Record scope, milestones, service levels, access and acceptance evidence.
- Agree how a variation, delay, defect or additional cost is raised and approved.
- Review actual performance against the original outcome, not only supplier activity.
- Prepare renewal, transition or exit before the decision becomes urgent.
A recommendation is not due diligence
A referral, case study or sales call can be useful evidence, but it does not replace checking the scope, contract, capability, dependencies and risks for your own organisation. Attach Planet does not verify suppliers or provide procurement advice.
Supplier decision FAQs
How many supplier quotes should I obtain?
There is no universal number. Focus on whether suppliers are responding to the same written outcome, scope, assumptions, evidence and contract questions.
Should a supplier choose the solution for us?
A supplier can explain options, but keep the decision criteria and internal accountability clear. Obtain independent professional support where the risk warrants it.
What should happen at renewal?
Review performance, changed requirements, price, risks, access, data, alternatives and exit arrangements before a commitment rolls over.
Use the right professional support
These guides provide UK-focused general information, not a personal recommendation. Company, tax, employment, insurance, data, consumer, health-and-safety and sector rules depend on the organisation, activity, people and jurisdiction. Check current official guidance and use an appropriately qualified professional where a personal assessment is needed.