NatWest Outage?
Here are the interesting bits from developer console:
Blocked a frame with origin "https://www.nwolb.com" from accessing a frame with origin "https://lpcdn.lpsnmedia.net".
Blocked a frame with origin "https://www.nwolb.com" from accessing a frame with origin "https://server.lon.liveperson.net".
Blocked a frame with origin "https://www.nwolb.com" from accessing a frame with origin "https://rbs.demdex.net".
XMLHttpRequest cannot load https://wup-6a1f7b653.eu.v2.we-stats.com/client/v3/web/wup?cid=fixer due to access control checks.
What are those unrelated, obscure domains doing on the login page?