Update README.md

Adding LHCb

README.md

@@ -89,5 +89,9 @@ ATLAS has also used it for embedded events in Physics briefings, e.g. [Heavyweig
 ### FCC
 Phoenix is also used by [Future Circular Collider](https://fcc.web.cern.ch), see [here](https://fccsw.web.cern.ch/fccsw/phoenix/).
 
+### LHCb
+Phoenix is also used by [LHCb](http://lhcb.web.cern.ch), see [here](https://lhcb-eventdisplay.web.cern.ch/)
+
+
 ## Contact
 The best way to contact us is to either open an issue in GitHub, start a [discussion](https://github.com/HSF/phoenix/discussions) or talk to us on our [gitter channel](https://gitter.im/phoenix-developers/community) (though this is not used as much these days).