The signed Client Contract / Agreement must have a specific clause permitting the Manager / Label to have any due publishing royalties etc., paid directly to them.
If the songwriter/s is / are a member of a Performing Rights Organisation (PRO) such as PRS, BMI, ASCAP etc, they will receive 50% of all due royalties directly via their PRO paid directly to them and the Manager / Label will receive 30%.
If not, then the Manager / Label will receive 80% of all due royalties for appropriate distribution.
Any non-UK songwriters must be members of a recognised Performing Rights Organisation.