Newly added TV shows not showing in PMS

OK So i’m tearing my hair out over this issue. Ive done all the steps suggested by JuiceWSA including Plex compliant file naming convention, the “Plex Dance” and anything else I can find including downloading the files again. The originals were downsized using Handbrake to 720p 30fps instead of the BBC standard 720p 50fps to reduce space usage so I swapped the modified files with the original downloaded 50fps filed. I do this on all files downloaded using get_iplayer and never had issues before. I have made some progress in that I deleted the directory containing I May Destroy You and then added it back after emptying the trash and running the “Plex Dance”. It then appeared in the library for the first time, however I still cannot get The Salisbury Poisonings to display in the TV Show library see below assuming it should be next to Salamander?

Notice that The secrets she keeps has been identified by Plex and added! Here is the screenshot of my TV directory and the folder contents
I have tested the files in both VLC media Player on the Linux box where they were downloaded and also using Windows media player on the Windows 7 PMS Server and they play correctly. I have also checked the permissions on the files and they are Read Write for Everyone. I am therefore totally stumped what to do now.
Fozzie