https://publications.parliament.uk/pa/ld201719/ldselect/ldeucom/15/15.pdf
https://www.socialeurope.eu/2017/06/stronger-pay-increases-are-not-enough/
https://publications.parliament.uk/pa/ld201719/ldselect/ldeucom/63/63.pdf
https://publications.parliament.uk/pa/cm201719/cmselect/cmcumeds/365/36503.htm