The bind is commercial, not legal: you could chase hard, but you need the next package of work, so the invoice drifts. A graduated, professional escalation lets you apply real pressure while keeping the tone measured — the reminder reads like a business chasing a business, not a threat.
RobinReturn is general England & Wales county-court recovery for an undisputed debt. It does not cover Construction Act adjudication, retentions disputes, or a contested final account — if your case turns on those, take advice. For a straightforward overdue account, the workflow does the paperwork and you stay in control.
Many overdue accounts settle at the reminder or Letter Before Action stage, once it is clear a County Court claim is the next step — though every case is different and nothing is guaranteed. Statutory interest (Bank of England base rate plus 8%) and fixed compensation are recoverable from the debtor, and they are yours to keep.