Multiple outlets report that Grosvenor Sport is running a World Cup final betting promotion ahead of Spain vs Argentina. According to the coverage, the offer includes a “double your odds” feature and provides customers with £30 in free bets. The articles frame the promotion as part of Grosvenor Sport’s marketing for the final match and describe it as a betting incentive for customers placing qualifying wagers on the event. While the reports focus on the headline components of the promotion—doubling odds and the amount of free bets—the specific eligibility rules, terms and conditions, and any minimum stake or wagering requirements are not detailed in the provided summaries. The outlets present the information in a similar, utilitarian format, indicating readers can find the relevant promotional details through Grosvenor Sport’s World Cup offer materials. Overall, the sources agree on the core structure of the promotion and its timing around the Spain vs Argentina final matchup.