BTW - having a look, England own the top 3 highest 50-over innings totals, with Sri Lanka owning the 4th best score, so it's looking good (at the moment for England to slot in here somewhere, if they continue to score at roughly the rate they're currently going at.
498/4 (2022 vs Netherlands)
481/6 (2018 vs Australia)
444/3 (2016 vs Pakistan)
Sri Lanka
443/9 (2006 vs Netherlands)