Why the Fleet Air Arm retained the Firefly's two-seat role

Why did the Fleet Air Arm continue with two-seat observation fighters such as the Firefly?

Because the Firefly combined useful fighter performance with long-range reconnaissance, complementing single-seat interceptors and American strike aircraft in the carrier air group.

The Firefly was sufficiently capable as a long-range fighter while carrying a navigator and reconnaissance crew member. In a mixed British carrier air group, the Seafire could specialize in combat air patrol while the Firefly searched for the enemy and fought its way in or out when necessary. Corsairs, Hellcats, and Avengers supplied further fighter and strike capacity. The two-seat design therefore answered a distinct scouting requirement rather than persisting only through conservatism.