The West Countryman, the BTCC wins record holder at Thruxton, comfortably headed both of the 35-minute sessions in his One Motorsport Honda Civic Type R, raising anticipation that the Brackley squad could be on the verge of turning the tide from its disappointing start to the season.
Cook emerged from the pits in the first session when the green lights were switched on with five minutes remaining, following a red-flag stoppage for teams to be reminded by officials about the new track-limits rules, particularly at Church Corner.
