According to ‘Farnborough and the Fleet Air Arm’ by Geoffrey Cooper – not. HMSs Albion, Bulwark, Centaur and Eagle were fitted with BH.V (5) hydraulic accelerators. HMSs Ark Royal and Hermes were fitted with BS.IV (4) steam catapults which were retro-fitted to HMSs Eagle, Victorious and Centaur.
So HMS Bulwark never had a steam catapult