I've managed to dig up 52 photos of (mostly) the exchange sidings. Not sure where they all came from, some are mine, some from Flickr, etc., so I cannot give appropriate credit to them, but I could send them to you via Dropbox or similar if you like.
I haven't seen a photo of a Crompton down there either. I know it did happen as Dad told me and I also recall he told the guy in the office that he'd not be responsible if he went down there with a Crompton and it spread the rails. I don't think one ever did, but it did happen to him at Crawley New Yard once.
Kind regards
John