How well are your daughters performing at school? Some UK universities are very competitive and require high academic standards of applicants. Others are less competitive. At the top end are universities such as Oxford, Cambridge, UCL, LSE, KCL, Bristol, Durham, and various others. In the middle there are universities such as (for example) RHUL, Reading, Leicester, Kent, Cardiff, and so on. Nobody would sensibly recommend studying law at one of the non-competitive universities. Avoid degree-mills such as ULaw.
I suggest that you don't pay much or any attention to the university league tables published by various organisations, as those tables are often based on subjective assessments or are quantitative assessments masquerading as qualitative assessments.