For any multi-site business, one cleaning supplier almost always beats a patchwork of several. One contract means one documented standard, one account manager and one invoice everywhere — instead of reconciling different providers, standards, prices and problems site by site. Bottom line: consolidate to one supplier unless a specific site genuinely needs a specialist local firm.
The hidden cost of multiple cleaners
Running a different cleaner at each site feels flexible but quietly expensive. Every provider is a separate contract to negotiate, a separate standard to police, a separate invoice to check, and a separate relationship to chase when something goes wrong. Quality drifts between sites, reporting is inconsistent, and no one has a view of the whole estate. The management overhead is real cost, it is just spread across your team's time rather than shown on one line.
The single-supplier alternative
Consolidating onto one supplier is the national alternative to that patchwork. With Optus Glean UK you get one national cleaning contract: one documented specification applied identically at every site, one account manager accountable for the whole estate, one consolidated invoice, and the same method statements, COSHH data, colour-coding and reporting everywhere. You manage one relationship, not twelve. For estates spread across towns and nations, multi-site cleaning under one contract is what the model is built for.
Consistency, reporting and one accountable party
The decisive gain is consistency and accountability. When every site runs to the same standard and reports the same way, you can actually compare performance and see the estate as a whole. And when a problem arises, there is one accountable party who owns the fix — not a finger-pointing exercise between local firms. That is the difference between managing suppliers and managing an outcome. See how the directly-employed, one-standard model works.
Consolidating without losing your people
The worry when consolidating is disruption and losing the cleaners who know each building. You keep them. When you move several sites onto one contract, the incumbent cleaners at each normally transfer to us under TUPE 2006 on their existing terms — we are TUPE-capable and run the consultation and Employee Liability Information process across every site. The people stay; the standard and the management improve.
When a specialist local firm still fits
Consolidation does not have to be absolute. A single site with a genuinely specialist need — a niche compliance regime, a specific local relationship — can sometimes stay separate. But even then, most of the estate benefits from one supplier, and the specialist exception should be a deliberate choice, not the accidental result of never consolidating.
Single supplier vs multiple cleaners (multi-site)
| Factor | Single supplier | Multiple cleaners |
|---|---|---|
| Cost | One contract; lower management overhead; buying power | Several contracts; hidden overhead spread across your team |
| Control | One specification and account manager across all sites | Different standards and relationships to police site by site |
| Reliability / cover | Pooled, built-in cover; TUPE-capable on switch | Cover depends on each separate provider |
| Compliance | One consistent vetting, COSHH and reporting standard | Inconsistent documentation and accreditations between firms |
| Best for | Any multi-site estate wanting consistency and one report | A single site, or a genuinely specialist local exception |