Robertson played an integral role in establishing the Aim offshoot, which pioneered a one-stop licensing and administration facility including deals between Aim members and online operations such as Wippit, Sony Connect and Napster.

In January Robertson's Rightsrouter vehicle signed a contract with Aim, which effectively saw his group manage Musicindie, with Rightsrouter's Steve Johnston taking the role of general manager of the new media arm.

However, Aim and Rightsrouter have now "mutually agreed" not to renew this deal paving the ...