That certain English (?) Irish outfit you work for bases their calculations on... basic pay... Correct me if I am wrong
Yes, as I said, you are wrong.
FR UK employee, UK employment contract. Holiday pay is basic pay, pluss holiday pay. Sick pay scheme also prety good!
If you don't know the facts, wind it in!
I don't claim FR to be the best, but I have been arround and they are a lot better than the garbage spouted on this network by some.