Prioritise WMS functionality and integration (APIs/EDI), inventory accuracy, pick/pack throughput, returns and reverse logistics, kitting/assembly, SLA adherence and scalability for peak periods. Verify service level reporting, exception workflows and carrier connectivity to ensure consistent customer experience.

A site in Reading shortens transit to London, the South West and the Midlands via the M4, reducing line‑haul mileage and delivery windows. Proximity to Heathrow lowers airfreight drayage and speeds international receipts. Location choice impacts regional coverage, carrier rates, and last‑mile lead times.

Negotiate transparent pick/pack and storage rates, volume tiers, minimums, onboarding and system integration fees, SLA penalties, inventory holding rules, and clear exit or transition clauses. Include periodic rate review windows and KPI‑linked performance credits to align cost with service.

Request demonstrations of the WMS, real‑time inventory APIs, audit trails and exception reporting. Ask for sample dashboards, daily feeds or sandbox access, and run a pilot with representative SKUs to validate syncing, order accuracy and reporting cadence before committing.