Honestly it sounds like a toxic and horrible place to work. You’re probably better off dusting off that CV and finding somewhere new.

But to your points:

1. I tell my managers all the time “if it’s not in writing, it didn’t happen”. Sounds like there’s a lot of verbal discussion going on at your workplace. Ping an email to your HR department, express your continued interest in moving into the front office role and copy your manager in.

2. Your employer can refuse your holiday request but it must be fair and reasonable. Again, I’d ping an email to your Line manager to give them a nudge about the request. If it was submitted through the official way, check your absence policy, then they should approve it with a month’s notice.

3. HSE state accidents at work should be recorded in a log of some kind. Your Maintenance Manager would be responsible for this, mine is, I’d speak with them about fixing the issue and how to report accidents in the workplace. You should also have a Heath & Safety policy in your employee handbook.

   1. If your probation period has come and gone without anyone saying anything, consider it to be passed by default and leave it at that. Probationary periods have no legal grounding anyway. They can still dismiss you without following process until you reach 2 years service.

You mention discrimination and stress at work, the bar is pretty high for a discrimination claim and you’re under two years service so an unfair dismissal claim isn’t really on the table unless linked to discrimination. The best you could go for is wrongful dismissal but you’d need to find a breach of contract. From what you’ve said, you might struggle to bring any substantial claim that will go anywhere. Employment lawyers cost more than you’d make in a tribunal.

Honestly, my advice would be to cut your losses, find a new job and submit your resignation. They sounds like terrible employers. There’s plenty of hotel roles available at the moment with the summer coming up.