Leverage up to 56 days interest free cashflow when using your American Express, Visa or Mastercard to pay Sigma invoices via Bluechain, while earning card reward points on every pound spent. Manage cashflow between NHS reimbursements and get rewarded for doing so.
No setup fees · No subscription · Sigma-exclusive Amex acceptance

Add your Sigma statement details and transact using your Amex, Visa or Mastercard.
Get up to 56 days interest-free cashflow, plus the full earn rate on your card rewards programme.
Pay your Sigma invoices via Bluechain and leverage up to 56 days interest-free cashflow on your credit card, keeping working capital in your business between NHS reimbursements.
Earn the full rate on your credit card's rewards programme when paying your Sigma invoices via Bluechain.
Integrate your Xero or Sage accounting software with Bluechain and cut time spent on manual reconciliation.
Bluechain is the only way to pay Sigma with an American Express. Through Bluechain you unlock the full value of your Amex Membership Rewards points, air miles, and up to 56 days of interest-free cashflow.

One transparent price per payment. No monthly charges, no setup costs, no hidden fees.
Rates shown are per transaction. The exclusive Amex rate applies to Sigma payments made through Bluechain. Reward value depends on your individual card programme.
A new way to earn on every payment you make through Bluechain, with points redeemable against luxury travel and more. Sigma customers will be first in line.
Join the waitlistBluechain integrates into your Xero or Sage accounting software, no manual data entry, no manual reconciliation. Reduce admin and increase your rewards.
Pharmacies tell us this saves around 3.5 hours a month on admin.
“Bluechain gives our pharmacy customers a genuinely better way to pay, improving their cashflow and letting them earn rewards on spend they were making anyway. Being the only route to pay Sigma by Amex makes it a real standout.”
“Paying Sigma on our Amex has completely changed our cashflow. We're not out of pocket waiting for NHS payments any more, and the rewards are a real bonus.”
“Setup took ten minutes and connecting Xero means everything reconciles itself. It has saved us hours of admin every single month.”
“The team walked us through everything. Now we pay Sigma and other suppliers by card and earn on every order. I'd recommend it to any pharmacy.”
Signing up takes a few minutes and is completely free. Request a call back, or reach our team on support@bluechain.com or 01273 805212.
No obligation. We usually call back within one working day.