Well in the context of the locohauled service, they are to all intents and purposes not cleared, as they could not operate the service as it stands!
Not seeking to disagree, I am intrigued by the process.
Do you simply mean they cannot operate with the coaching stock?
Can a locomotive be cleared for a route to haul some stock but not others? Is this a common state of affairs? Is it a technicality easily overcome or a serious practical issue?
Is new stock cleared for routes in a blanket process with troublesome routes addressed specially or do they need to be cleared specifically for every route.
I'd say this is off topic, but clearances are a specific issue on the north of the Cumbrian Coast and there isn't (to me, a duffle bag, anorak, Thermos and ABC enthusiast) an easily discernible logic, especially when you look at DMUs passed for this route or not in the sectional appendix.
All this is moot because these locomotives are plainly far too costly to simply potter up and down the coast.