I realised after researching a bit more, that Construct Animate is another programme.
I had chanced upon Exporting image sequences with Construct Animate page through a internet search.
I am already subscribed to Construct 3, and couldn't manage to batch export all the frames from a sprite animation using Construct 3 - original files deleted unfortunately. I saved a few of the images by selecting sprite frame in the sprite animater, ctrl + s > save frame to save individual frame image - but would have been too time consuming as it is 188 frames.
The free version didn't allow export of an image sequence but did allows for 5 second video, which was perfect to retrieve the sprite animation.