You'll need to brace yourself for this. What the Train Manager said is really horrific. You can tell that from LNER's apology on Twitter.
London North Eastern Railway
@LNER Replying to @laurencec123
I'm really sorry to see this, Laurence, our Train Managers should not be using language like this, and I thank you for bringing it to my attention, Please could you let me know which service you are on and I will ensure they remain as inclusive as we strive to be at LNER.
OK, steady yourselves now. I attach a screenshot of the original complaint, which I saw on another Twitter account. The complainer has made their Tweets private, probably because of the avalanche of robust and forthright hateful responses to the LNER tweet above.
I trust the Train Manager has been sent for re-training (as it were). Poor bugger.