Easier than climbing round it like i had too then!
I saw your tall gates, underneath a bridge. They were wide open with a half-barrier & cones by the security hut. I think the security guard just looked up when he saw me walking out, before returning to their hard work (probably watching the football!)
Took me just under 40 minutes to get back to Redcar Central, that includes going the wrong way at the start and following Google's instructions which put me on the wrong side of the tracks.
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Anyhow I have finished my audit, no more issues have been flagged up (although the only one I would revisit is Poole as the only entry is for that 458 farewell tour, with knowledge that I've previously used the station before I started logging), so I can now say...
England, Tick.