Spending a voucher with different TOCs

[38Cto15E]

I have some rail vouchers from delayed trips last year.
If I go to the station booking office can I use say my £50 voucher with different TOCs?
I am thinking of going Cross Country, East Coast, Northern, Virgin and East Midlands trains for my journey and I would like to use my vouchers as near as possible to their value and pay by cash/credit card for whatever is left over.

I ask the question because on the rear of the voucher you have to fill in journey details as if it is just A to B.
TIA

 

[PG]

Having just this week used some vouchers sent to me by East Coast at a station operated by ScotRail to purchase First Great Western tickets you should be absolutely fine

Re filling out the reverse of the voucher(s) - the friendly ticket clerk who served me must have done that bit, I just handed the vouchers over in part payment.

 

[island]

You can use the vouchers for whatever rail tickets you like, as long as your transaction value exceeds or equals the total value of vouchers you're using.

Ask the clerk what to put on the back of the voucher; you are likely to be told to just write the first or longest journey, if anything at all.

 

[bb21]

Your transaction value does not have to exceed the value of the vouchers, but obviously you won't get any change in that case as stated on the vouchers.

 

[Crossover]

As for filling it in, sometimes the clerk has done it for me. Others I've just been asked 'to fill it in'

As per what I've read here, if it's been used for a combination, I often put the main one. There's limited space anyway so it's only ever brief

Yes, they can be redeemed against any tickets AFAIK