Multimillionaire Derek Webb, a Labour donor, goes all-in with support for levy on online casinos and bookmakers

• Labour considers up to £3bn tax raid on gambling firms

As a former professional poker player, Derek Webb is used to rising from the table holding more chips than he started with.

Vanquished opponents are left scratching their heads, wondering how they have been bested by a softly spoken, bespectacled septuagenarian with a Derby accent.