"We would like to apologise to customers at Romford.  Due to overrunning engineering works in the Southend area, all services from Southend are delayed"

1) "We would like to apologise".  Go on then.

2) I'm a passenger, not a customer

3) "Delayed"  Now, it's really rather silly to lie, isn't it?  They're not "delayed" at all, are they?  Look at your own information boards.  See that word in red?  What does it say?  That's right, and what does "cancelled" mean?  Does it mean the same as "delayed"?  No.

4) When there are overnight engineering works, it's very common for them to overrun.  Not good, but hardly a surprise.  So why is there no contingency?  Why no buses, no extra trains run on the part of the line (the majority, in this case) that's not suffering the overrun?

5 It's fashionable these days, not to speak of  "a train", but to say, "a service". Are you familiar with what the word "service" actually means?