What this case actually relates to is equal pay for work of equal value; if it goes to an employment tribunal to judge, they will likely use some form of job evaluation to come to a judgement re the value of the different roles and whether they can be perceived as of "equal value" taking account of the very different work involved. The issue, of course, will affect not just Asda but all supermarkets - hence the judgement one way or other will be highly significant.

All that has happened thus far is that it has been agreed the case can go to court - no judgement has been made and I suspect this will run on for years given the appeals process etc. Very high stakes for both employers and unions.