Santander DO show references, we've been using them for about 4 years and providing you pay in £1000/month banking is free and you even get interest on your account.
Ian. If Santander have started showing the references it must be very recent. Until about two or three years ago, they didn't show them until after the end of a calendar month in an archive. I phoned a few times to ask about the possibility of showing them in real time. Eventually (they had done a major update at the time) they started showing them in real time. I started to gear up for converting my customers over. Then the references disappeared completely. No archive. Nothing.
I'm not sure which bit you are calling the "reference".
I have been getting the following info in the last couple of years:
<DATE>."FASTER PAYMENT RECEIPT REF<customer name><amount><balance>
Any reference I give the customer to quote fails to be displayed. For commercial jobs, the company name appears where <customer name> is so not such an issue for those jobs.
Personally, I don't call that a reference. Granted you can usually work out who the money is from but that's not always possible or practical for me where there are duplicate surnames paying identical amounts. That's why I get them to quote a more specific reference related to their address. That's also why I now have BACS payments made to a separate account.
Perhaps you are referring to the customer name as the reference.
I don't know if any of your customers bank with "IF" (Intelligent Finance) but when a payment comes in from them, they (IF) don't even show the customer surname. Instead they show something that, to me, is a meaningless string of alphanumeric characters. However, the reference relating to the customer address is supplied. So a Santander business person receiving a payment from an IF customer will receive neither the customer surname nor the supplied reference. If we are all to be forced onto electrionic transactions eventually, these outfits really need to get their arses in gear and show some consistency.
My issue with Santander is they keep making changes that to them are small but to a customer can make a big difference. They give no warning of such changes and it can take a year to even get someone to admit that such a change has even happened. However, Santander make it easy for me to make manual deposits. I live near a branch. I can make cash and cheque deposits at the ATM 24/7 free of charge (within the limits). That is the only reason I do any business with them.
I've just re-read your post. You say you can deposit to Santander at post offices. This tells me that you may have been on another system previously (perhaps A & L or Bradford & Bingley??). Maybe part of their old system has been kept going. If you are ever fully migrated across to Santander's own system (through which I came) then you may see some changes. I am with Santander pretty much by default having been an Abbey National, then Abbey customer for many years.