welcome to the site mate!
The vacancies are out there pal! the thing you have to be is flexible!...as these jobs sods law very rarely come up on your doorstep and re location may be necessary (if you want it enough and personal life depending)
i think the last year or so has been the most active in terms of recruitment i have seen it in a long while!...in the early days of my applications half the country would apply for trainee jobs as there was the recession and EWS had just had multiple redundancies and there was qualified drivers floating around everywhere with extensive route knowledge! so trainee jobs were scarce for about 3-4 years! also criminally because of said recession companies had a preference of recruiting trainee's off the street so if you were already working on the railway you were at a huge disadvantage
I'd say be VERY careful about using the term 'natural progression' now mate especially if you get to an interview! i remember before getting my job i was having a brief chat with the head of conductors (who went on to become head of drivers at a later date) and i was telling him about my frustrations about trying to go driving and i said 'it's the natural progression'.
i was met with a look of total confusion and was asked 'who the hell told you that load of claptrap!?......your natural progression is to conductor instructor or conductor manager not directly to driver'
so i think it's safe to say toc's have a different outlook these days in comparison to BR times! in terms of equality mate it is great for people off the street who wanna go straight to driving but in terms of what's morally right for people who have already cut their teeth within the industry it's another challenge to put into an already challenging process
anyway we digress.....keep looking pal they will soon pop up in your area i am sure