My UAE work visa is about to expire on September 30 of this year, but my UK tourist visa is still valid until November. Can I still travel to the UK in September?
It could be a problem. You were given the visa when you had a job to go back to in UAE. Without the job there, border control in UK might decide you are likely to look for work in UK and refuse to allow you entry. But this is not certain and depends on your overall circumstances and landing interview.