Commuters are being warned of possible diversions and delays in Leeds right now (Friday evening).
Emergency engineering work is being carried out on rail lines in Leeds right now.
Northern Rail said: "TRAVEL NEWS: Due to emergency engineering work at #Leeds, services are running at reduced speeds & may be diverted via a different route at short notice. Network Rail staff are working on the problem, and plan to undertake engineering works overnight to resolve it for tomorrow."
Earlier motorists hit traffic on the M1, with long delays
On Saturday, thousands will gather in Leeds city centre for an anti-Brexit march, closing roads in the city centre
Live incident: Leeds School on lockdown after street robbery