I have an unregistered PAYG Oyster card, which I've had for many years but only used occasionally (I'm not in London, other than the very edge, that often, and when I am, I often have a paper outboundary Travelcard or a through ticket from one side of London to the other). In late September I used the card for the first time since pre-Covid, and it worked fine; a few weeks later I used it again to tap in at Surbiton without noticing anything unusual, but when I tapped out at Waterloo, instead of being shown how much the journey had cost, I got the message 'card expiring soon'.
Can anyone shed any light on this? I can't find anything relevant on the TFL website, or via Google, and while I vaguely remember reading something here about older Oyster cards being withdrawn, a search didn't reveal anything (apologies if I've missed something). Am I likely to find that next time I try to use the card it won't work, and if so, how do I get the balance (and deposit) transferred to a new one? (I would ask at an Underground ticket office next time I'm in London, except that I don't think there are any these days).
Can anyone shed any light on this? I can't find anything relevant on the TFL website, or via Google, and while I vaguely remember reading something here about older Oyster cards being withdrawn, a search didn't reveal anything (apologies if I've missed something). Am I likely to find that next time I try to use the card it won't work, and if so, how do I get the balance (and deposit) transferred to a new one? (I would ask at an Underground ticket office next time I'm in London, except that I don't think there are any these days).