Official statistics on the take-up of income-related benefits at Great Britain level, including Pension Credit, can be found in the ‘Income-related benefits: estimates of take-up in 2016 to 2017’ publication. https://www.gov.uk/government/statistics/income-related-benefits-estimates-of-take-up-financial-year-2016-to-2017 <p /> The next report containing 2017/18 data is due to be published on 27th February 2020. It will be available here: https://www.gov.uk/government/statistics/announcements/income-related-benefits-estimates-of-take-up-financial-year-2017-to-2018 The information requested on the amount of Pension Credit which remains unclaimed is only available at the Great Britain level. Below are the figures on the amount of unclaimed Pension Credit within Great Britain over the past 3 years of data available. Year Estimated Amount Unclaimed (Millions of Pounds) Range (Millions of Pounds) 2016/17 3,050 2,620 – 3,520 2015/16 2,720 2,330 – 3,140 2014/15 2,760 2,400 – 3,140