UK: passengers stranded as signalman gets stuck in toilet

[John Ashworth]

Rail passengers stranded as signalman gets stuck in toilet

In-convenience for passengers on Worcester - Malvern - Hereford line after toilet break at Henwick

Edited to add the following link for its title if nothing else!

Signal box man stuck in thunder box

And another:

Most unusual excuse for rail delays yet? Train over an hour late due to signalman trapped in toilet

He nipped away from his post to answer the call of nature but was left flushed with embarrassment when the brick outhouse’s lock jammed...