NIHR Payment guidance for researchers and professionals

Available: https://www.nihr.ac.uk/documents/payment-guidance-for-researchers-and-professionals/27392#Payment_rate

INVOLVE Budgeting for involvement: Practical advice on budgeting for actively involving the public in research studies

Available: https://www.invo.org.uk/wp-content/uploads/2013/07/INVOLVEMHRNBudgeting09Jul2013.pdf

INVOLVE Cost calculator

Available: https://www.invo.org.uk/resource-centre/payment-and-recognition-for-public-involvement/involvement-cost-calculator/