The QS rankings will help you, since they include placement and salary data. None of these programmes outside the top 100 have very good outcomes, but in terms of salary Sheffield and Glasgow will be well ahead of Southampton and Liverpool. Placement will be around 80%.


The CUG undergraduate ranking will be a guide to student experience: Southampton seems to be the one only to come in the top half; Glasgow and Sheffield are average' Liverpol is lowest.  

Assuming you come from an over-represented applicant group, you'll need to aim higher.