Retentions offer.
I currently have the M250 package with Stream. I pay around £19pm (plus a £5 O2 SIM to get a discount). They've decided to charge £48 now it's out of contract. I called retentions who said they'd go...
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Seems reasonable to me. Stream, now Flex, is £5 a month anyway for Freeview and a few more channels than Freeview.
Lookup FTTC prices and you will see you still have a good price compared to market. ALTNETS are different, as many in huge debt and some already gone under. Some are successful, but only in certain areas, same as Openreach FTTP.
It may not be as good as VMs new customer offers, but still not bad.