https://www.gov.uk/government/consultations/calculating-holiday-entitlement-for-part-year-and-irregular-hours-workers
We're seeking views on proposals to pro-rata holiday entitlement for part-year and irregular hours workers based on the annual hours they work.
holiday entitlementcalculatingpartyearirregular
https://www.rocketlawyer.com/gb/en/employment/manage-employees/legal-guide/how-to-calculate-holiday-entitlement
How much holiday pay do I get? Calculate annual leave entitlement and holiday pay, including for irregular and part-year workers under the new holiday rules.
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https://www.gov.uk/holiday-entitlement-rights
Holiday entitlement or annual leave - information for employers and workers on entitlement, calculating leave, taking leave, accruing leave and disputes
holiday entitlementgov uk