A really useful link relating to inequality of income – http://www.bbc.co.uk/news/business-42939584 See below where to find the relevant section within the specification for Edexcel, AQA and OCR…
Edexcel spec reference 4.2.2 Causes of income and wealth inequality within countries and between countries
AQA spec reference The impact of gender, ethnicity and other forms of discrimination on wages, levels and types of employment.
OCR spec reference P15 Explain the causes of inequality of income and wealth