He joins Gibraltar-based PartyGaming in the lead UK marketing role and will report into chief marketing officer John Welch, who joined this week from Centrebet. PartyGaming owns a number of brands, including PartyPoker, PartyBingo and PartyCasino.
Robinson joined 888.com five years ago, and oversaw the appointment of Grey London to its global ad account earlier in the year. According to a company spokesman, Robinson is yet to be replaced.
It was revealed this week that Grey resigned the 888.com account due to a number of disagreements over fees. The brand has called a pitch for the £3m account.
In June, it was announced that PartyGaming signed a deal with Channel Five to launch a new, Five-branded online bingo and casino service.