In the life of ISS, 69,135 SMEs switched their account from Natwest to one of the participant organisations. The residual funds of £24.1m were distributed (in line with the ISS original design) to the three ISS Participants which attracted the most switching SMEs. Agreements with the three awardees expired at the end of December 2021 prior to which a further 436 SMEs transferred from Natwest to them, bringing the final total of SME switches under ISS to 69, 571.