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How to Get Paid


Here follows guidance to our Suppliers on how to ensure that they are paid on time.


Address to Which Invoices Should be Sent


SyntheSys Systems Engineers Ltd

Unit F16

St Hilda's Business Centre


North Yorkshire

YO22 4ET


Purchase Order Number Requirement


No purchase order is required for standard products less than £50.  Standard products are those that can be bought from a high street shop.


All purchases for products and services over £50 require a Purchase Order Number.


Specific Details to be Quoted on Invoices


It is preferable that the name of the person authorising the Purchase Order is recorded on the invoice, but this is not mandatory.


Bank account details should be quoted on all invoices.  If payment is to be made to an international bank account then the IBAN number and BIC address are required.


Receipt of Invoices


Invoices should be sent to the address above and emailed to


Invoices will be approved for payment within 2 working days of receipt.


Payment Dates


All payments are made within 30 days from the date of the invoice unless specific payment terms have been agreed.  Payments to Sub-Contractors will be made within 3 working days following receipt of payment from the Customer.


Payment Method


Payments will normally be made by BACS.


Contact Details for Invoice Payment Queries


Please get in touch with our Commercial Business Support Officer on: +44 (0) 1947 821464 or email


How Disputed Invoices are Dealt With


Initial investigation of any disputed invoice will be undertaken by the Commercial Business Support Officer.  All unresolved disputed invoices will be referred to the Business Services Manager.


Further Information

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Version 4.2g dated 21 March 2024