1. CAF has been producing the UK Giving report since 2004 and has been tracking giving in the UK for several decades.
2. All figures, unless otherwise stated, are from YouGov Plc. Total sample sizes for the following calendar years are: 2023: 13,164; 2022: 13,140; 2019: 13,499; 2016: 8,137. The survey was carried out online and the figures have been weighted and are representative of all UK adults (aged 16+).
3. To create the constituency-level maps and data, a statistical technique known as Multilevel Regression and Poststratification (or MRP) was used by Electoral Calculus. It is a method for adjusting public opinion poll results to account for any imbalance between the survey sample and the population in each constituency and is often used to predict election results by seat.