Jack Lowden leads the market at 37.9% implied probability due to his recent surge in insider buzz and betting odds, fueled by his established spy credentials as River Cartwright on Slow Horses and comments from co-star Gary Oldman suggesting producers have selected a candidate with fingers crossed for the Scottish actor. Scriptwriter Steven Knight has also hinted at knowing the choice without confirming details, aligning with Lowden’s age, stage background, and perceived Daniel Craig-like intensity that match the franchise’s reported preference for a younger, less-established lead. The 18.3% on no selection yet reflects the absence of an official announcement despite August screen tests and shortlists including Callum Turner and Jack Barton, while lower odds on names like Jack O’Connell and Harris Dickinson track their more speculative positioning in recent casting reports.