I’ve been chatting to Income Access (where you can also promote Ladbrokes Casino) about this and other issues.
Apparently, promoting Ladbrokes via IA gives a similar commission structure to promoting direct but with the added benefit of seeing normal daily revenue stats. Quite how Ladbrokes can provide these figures to IA affiliates but not to their own direct affiliates is a mystery.
If the above is correct then it would make sense surely to promote Ladbrokes via Income Access, rather than via their own direct program.