Becoming a trainee/train driver how would I go about it as seems like a very hard job to obtain.

Hi Brad.
Please do visit the FirstGroup Careers site to see if there are currently any trainee train driver vacancies available and submit an online application should there be - https://careers.firstgroup.co.uk/jobs/search
There are some minimum requirements for this role:
* You must be at least 21 years of age to be accepted on to the training course, as this is an industry requirement.
* You'll need to live within 60 minutes travel time to the depot, without using public transport when it is not available. The safety responsibilities make this requirement a necessity.
* You will be needed to work shifts of varying start times, including weekends and nights.
* You'll need to pass a full driver medical which includes hearing, sight, and colour vision tests (using the Ishihara plates).
As you've alluded to, this is an extremely popular role and we receive huge numbers of applications, so all else I can advise is that you complete your application with sufficient detail, evidencing why you would be a good fit for the role.
Good luck and I do hope this helps.