Could stronger carrier support have changed Singapore?

Could additional carriers and a stronger Force Z have prevented Singapore from falling?

Possibly: naval air and surface power could disrupt coastal supply, preserve the sense that Singapore was supported, and alter the campaign's operational conditions.

The Japanese advance relied heavily on coastal movement and supply, making an intact naval force relevant beyond a fleet battle. Surface ships and carrier aircraft could threaten that route and make the defenders feel that Singapore had not been abandoned. Carrier support would also improve Force Z's ability to survive in waters dominated by Japanese land-based aircraft, though the result remains a possibility rather than a guarantee. More Ark Royal-style carriers would in turn reflect a British response to the strike capacity demonstrated by the Lexington class.