I was thinking around 19k looking at other areas...
Hmmm......
I've applied for Groundstaff roles with both DRS and DBS in recent months. I can't remember the exact salaries (you could probably find the old adverts on Google) but i'm sure they were within the brackets i posted in my earlier reply. I don't know why/if Freightliner would pay considerably less given that they seem to want you to do the Groundstaff role and be able to operate/drive some specialist bits of kit by the sounds of it.
From the tone of the advert i got the feeling they are looking for someone already qualified in the role and capable of operating the equipment they list. I think the "for exceptional candidates full training will be given" is just an arse covering excercise.
Don't let any of what i have said put you off applying though, i have applied myself and wouldn't want you to think i was trying to talk you out of going for it!!
Good luck not punching your screen whilst trying to get the Freightliner online application process to not dump everything you have typed once you press 'next'.