What do you think should happen if a bus driver is unable to issue the type of ticket you ask for even though it's a type of ticket that you are supposed to be able to buy on that bus?
In particular, let us suppose that you want to buy an all-day ticket that is supposed to be available to purchase on board that operator's buses, but the driver doesn't know how to issue it, especially if they are new to the job or don't very often get asked for that type of ticket.
I suppose there are four obvious solutions in that scenario:
(a) The driver lets you travel for free and trusts you to buy it at the next opportunity.
(b) As above, but the driver gives you a slip of paper (maybe on blank ticket stock) saying you asked for that type of ticket but they didn't know how to issue it or had difficulty doing so, signs it and dates it.
(c) You have to buy a normal single for the first leg of the journey you are making but can exchange your ticket for that leg as part payment for the ticket that you wanted.
(d) You have to pay extra for the first leg of your journey even though you shouldn't have to.
In practice, I would guess that (d) would be the most likely solution, although in that case it would be worth contacting the relevant operator afterwards (or the organisation that administers the day ticket that you were trying to buy, such as the relevant local council or Combined Authority) to complain, and hope that they would reimburse you the extra expense incurred or send you a voucher for a ticket of the type that you were trying to buy (of if it's a ticket type that can be issued as a scratchcard, send you a complimentary scratchcard ticket, although there aren't many tickets that are still issued in that format now).
It happened to me once, about 25 years ago, when I tried to buy a Derbyshire Wayfarer on a bus. In those days, bus drivers in Derbyshire were all supposed to carry stocks of Wayfarer backing sleeves into which they would insert a Wayfarer issued on standard ticket stock, but this driver didn't have any of those sleeves in stock, so I had to pay extra for the first leg of my journey but wrote to Derbyshire County Council afterwards and, sure enough, they sent me a complimentary scratchcard Wayfarer.
Drivers might get into trouble for doing (a), especially if a ticket inspector got on the bus. In that case it would probably be advisable to approach the inspector or attract their attention as soon as you saw them getting on and not wait for them to approach you.
In particular, let us suppose that you want to buy an all-day ticket that is supposed to be available to purchase on board that operator's buses, but the driver doesn't know how to issue it, especially if they are new to the job or don't very often get asked for that type of ticket.
I suppose there are four obvious solutions in that scenario:
(a) The driver lets you travel for free and trusts you to buy it at the next opportunity.
(b) As above, but the driver gives you a slip of paper (maybe on blank ticket stock) saying you asked for that type of ticket but they didn't know how to issue it or had difficulty doing so, signs it and dates it.
(c) You have to buy a normal single for the first leg of the journey you are making but can exchange your ticket for that leg as part payment for the ticket that you wanted.
(d) You have to pay extra for the first leg of your journey even though you shouldn't have to.
In practice, I would guess that (d) would be the most likely solution, although in that case it would be worth contacting the relevant operator afterwards (or the organisation that administers the day ticket that you were trying to buy, such as the relevant local council or Combined Authority) to complain, and hope that they would reimburse you the extra expense incurred or send you a voucher for a ticket of the type that you were trying to buy (of if it's a ticket type that can be issued as a scratchcard, send you a complimentary scratchcard ticket, although there aren't many tickets that are still issued in that format now).
It happened to me once, about 25 years ago, when I tried to buy a Derbyshire Wayfarer on a bus. In those days, bus drivers in Derbyshire were all supposed to carry stocks of Wayfarer backing sleeves into which they would insert a Wayfarer issued on standard ticket stock, but this driver didn't have any of those sleeves in stock, so I had to pay extra for the first leg of my journey but wrote to Derbyshire County Council afterwards and, sure enough, they sent me a complimentary scratchcard Wayfarer.
Drivers might get into trouble for doing (a), especially if a ticket inspector got on the bus. In that case it would probably be advisable to approach the inspector or attract their attention as soon as you saw them getting on and not wait for them to approach you.