Great Western Railway is reminding rugby fans attending Saturday’s Six Nations fixture in Cardiff to check before they travel as industrial action may impact services.

Action by the train drivers’ union, Aslef, may lead to some short-notice alterations or cancellations before and after the Wales-Scotland match at the Principality Stadium (16.45 kick-off). Other train operators are also affected, although Transport for Wales services will run as planned.

Engineering works between Bristol and Weston-super-Mare mean Cardiff-Taunton-Plymouth services will start and terminate at Bristol Temple Meads. Rail replacement services will be in operation.

Trains will be extremely busy immediately before and after the match, and a queueing system will be in place at Cardiff to help get people home safely.

In a repeat of the system in place for last year’s Six Nations, supporters travelling east towards Newport after the match will be asked to queue on the square in front of Cardiff Central, rather than from Riverside Car Park.

GWR will use its electric-only Class 387 Electrostars in shuttle services between Cardiff and Newport to help disperse crowds.

GWR Operations Director, Richard Rowland, said: “We do ask fans to check before they travel as industrial action may lead to some short-notice alterations or cancellations, and to travel as soon as possible after the match.

“We’d also like to remind supporters that trains will be extremely busy leading up to kick-off and immediately following the match. Please do allow sufficient time to queue to board trains safely.”

Transport for Wales Head of Performance, Adam Terry, said: “Our staff are not involved in this week’s industrial action and we’ll be running our full timetable, however, some trains may be busier than usual due to the service changes at other operators both on the day of the match itself, and the surrounding days.

“We’ll be providing as much capacity as possible on services in and out of Cardiff before and after the game, but we’d advise all customers to plan their journeys carefully, leave plenty of time to travel and check for the latest updates throughout the day using our website or our award-winning mobile app.

“We’re looking forward to welcoming tens of thousands of rugby fans through Cardiff Central station and our staff will be working incredibly hard to get everyone to the game and home safely afterwards.”

Industrial action means there will be significant disruption to GWR services on Sunday and no trains will operate on long-distance routes between London Paddington and South Wales.

A limited service will run on a limited number of routes, including between Cardiff and Portsmouth, and Cardiff and Exeter St Davids via Weston-Super-Mare.

If you intend to travel where trains are running, please check before you travel as they will be busy and are likely to be disrupted.

For more information, or to check your journey, please visit GWR.com.