Cass has good faculty, especially Dr. Giovanni Urga who taught us advanced econometric.
Like SMU, they have an active portal with a ton of job opportunities based in UK. The downside is there's simply too many to meaningfully narrow down to the good ones. There's a dedicated career officer who sent us a couple of quant-specific opportunities in bulge brackets. Overall, career services in Cass is not too shabby but nothing to sing home about.
But it's always good to keep in mind that career services is a complimentary tool to help you find a job. At the end of the day, your own destiny is in your own hands.