Santander online banking, been good for ages, past few days, when try log on, white page with 400 bad request and this, Your browser sent a request that this server could not understand. Size of a request header field exceeds server limit., Any ideas? Not a dodgy website or scam.
other customers on twitter are saying the same thinghttps://twitter.com/Keithma06625238/status/1190970733821911040https://twitter.com/santanderukhelp/status/1191293602695131137