Barclaycard Merchant Services
- Merchant services arm of Barclays provides various services to both online and offline businesses.
- http://www.barclaycardmerchantservices.co.uk/

Fundamentum Ltd
- Providers of iLAPS (Internet Loan Application Processing System) for financial institutions.
- http://www.fundamentum.co.uk

Cashbacs International Limited
- Commercial bureau authorised to authorised to process transactions on behalf of third-party organisations.
- http://www.cashbacs.com

LINK Interchange Network Ltd
- Cash Machine Network with over 41,000 ATMs connected. Includes an ATM locator.
- http://www.link.co.uk/

BACS
- Automated clearing house.
- http://www.bacs.co.uk

Girobank BillPay
- Online bill payment service for debit card holders.
- http://www.billpayment.co.uk

Bottomline Technologies Europe
- BACSTEL-IP payment and collection solutions.
- http://www.bottomline.co.uk

sortingcodes.co.uk
- Providing payment clearing details for banks and financial institutions participating in UK clearing systems. Search by bank name and branch, sort code or CHAPS, Euro and BIC code. [Subscription Service]
- http://www.sortingcodes.co.uk

Crest Clearing and Settlement System
- Provides real-time settlement for a comprehensive range of UK and international shares, UK government bonds and other corporate securities.
- http://www.crestco.co.uk

Direct Credit
- A service that enables payments by electronic transfer directly into bank or building society accounts.
- http://www.directcredit.co.uk

Association for Payment Clearing Services
- Information and facts about UK money transmission, payments and clearings.
- http://www.apacs.org.uk

Card Watch
- The UK banking industry's body that works with police, retailers and organisation including Crimestoppers to fight plastic card crime.
- http://www.cardwatch.org.uk/