The BAE website says the Hotspur's wingspan was 40' 6". The decreased wing span vs the Henley's 47'10.5" was intended to improve speed and maneuverability. The wing area of the Henley was 342 ft2 vs the Hotspur's 263 ft2 (both including the fuselage).
The outer wing panels on both aircraft were the same as on the Hurricane, but the Hotspur's inner wing structure was different, with a span of 9' 7.5" vs the Hurricane's 9' 1.5" (between joint pin centers).
The fuselage and center wing section of the Henley were significantly different from the Hotspur's, with the Hotspur's fuselage significantly wider in order to accommodate the turret in a streamlined section.