It depends on the line.
Where are you starting from?
See map
https://tfl.gov.uk/cdn/static/cms/documents/cycles-on-the-tfl-network-november-2022.pdf
Edit. Actually it looks like restrictions are week days only Edit 2. I think you can go from Leyton to Epping on the Central Line, the rest of the line you can't take a bike.
I’m going to say central from possibly Stratford, but that’s a guess. Thanks for that map. Leyton’s not too far out of town. Is it??
It's not far from Stratford
@Chaley started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
It depends on the line.
Where are you starting from?
See map
https://tfl.gov.uk/cdn/static/cms/documents/cycles-on-the-tfl-network-november-2022.pdf
Edit. Actually it looks like restrictions are week days only
Edit 2. I think you can go from Leyton to Epping on the Central Line, the rest of the line you can't take a bike.