Hi, just a quick question about this. The access tagging on the barrier node has bicycle=yes, but the note and changeset comment say that bikes are prohibited.

As far as I can tell from the traffic orders, only motor vehicles are prohibited in this LTN:
https://www.thegazette.co.uk/notice/4158081
https://www.thegazette.co.uk/notice/4452381

It might be worth adding traffic_intervention=modal_filter to the barrier node - see https://wiki.openstreetmap.org/wiki/Key:traffic_intervention