What is Case Law with regard to the construction industry?

Answer 1

Sometimes the circumstances are such that it's unclear how the UK Law should be applied ..

Sometimes the Law is so unclear that everyone waits for the outcome of a 'test case' .. (example = Bank Charges)

The outcome of the (first) trial in that area is used as a 'Reference' for similar circumstances later on... so if (for example) the banks think they are going to LOOSE the 'test case' they might settle up to avoid it going to Court

Such 'References' are known as 'Case Law' ... IF the Government decides to CHANGE the Law in that area, none of the existing decisions are changed, however the 'Case Law' is dropped and everyone waits for the outcomes of the next trial ..

Answer 2

You need to give more details.
Case Law is what is says, relates to a specific case, and future rulings will consider what was said previously on a similar matter. There are probably hundreds of cases relating to the Construction industry, and they may all be referred to as Case Law.