The customer authorization (provided in the link you clicked) is out of date, and does not entitle you to use the Blended Threat service.
https://74n5c4m7.r.eu-west-1.awstrack.me/L0/https:%2F%2Fwww.bankofengland.co.uk%2Fboeapps%2Fdatabase%2Ffromshowcolum ns.asp%3FTravel=NIxAZxSUx%26FromSeries=1%26ToSeries=50%26DAT=RNG%26FD=1%26FM=Jan%26FY=1990%26TD=31%26TM=Dec%26TY=2025%26FNY=Y%26CSVF=TT%26html.x=66%26html.y=26%26SeriesCodes=XUQABK67%26UsingCodes=Y%26Filter=N%26title=XUQABK67%26VPD=Y/1/0102016d417d1a88-fa60968a-2d0a-4cbc-9dc1-8491dee14192-000000/3gJKYPd7vsJ_q8uzREhr7tTauro=127