Origin have been around since the early days of FTTC when it wasn't available in most areas.. They used to offer a service mostly in South Yorkshire as we had a government funded "Digital Region", but it was poorly marketed and hardly anyone used the service as a result causing it to fold.

At that point they moved to reselling Openreach FTTC like the majority of ISP's use now, they were based in Sheffield originally, but I believe they moved to Doncaster.. Not sure if they're still located there or not.