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Faq - on board our trains

How do I report problems with the wifi?

Our Wi-Fi is proving to be very reliable, however, there are still some faults that Icomera, the company that provides and maintains the system can’t see remotely. Consequently, they rely on our customers and staff reporting problems directly to them. 

Onboard our trains : please report all Wi-Fi defects onboard our trains as soon as possible directly to Icomera on 020 8208 0375, or they can be emailed at chiltern.support@icomera.com . Many defects can be remotely rectified once reported, so the sooner you let us know, the sooner you can enjoy continue to enjoy the facility.

At our stations : If you do have any problems at a Chiltern station, WifiSpark have a helpdesk that passengers and staff can report connectivity problems to open 24 hours a day every day. Either call 0344 848 9555 or email: support@wifispark.com.

Is it possible to reserve a seat?


We do not offer seat reservations on our trains.

When booking tickets for other train companies, if seat reservations are available, you will be given the option to choose any preferences you may have, such as table, power points and direction of travel. These preferences can be saved in your booking profile.

Only when the booking is placed will confirmation be made that your seat reservation has been successful.

On some routes especially over bank holidays it is compulsory to reserve a seat and you cannot join the train without a reservation.

Seats may be reserved for children, but for a child under 5 a reservation can only be made if a suitable child ticket has been purchased.

Onboard trains, seat reservations are either shown in an overhead display or as paper seat reservation in the back of the seat.

What is the Business Zone?

Available on our silver trains (identified by the MS in the timetable), Business Zone provides business passengers with all the convenience needed to make the journey both comfortable and productive.

You can upgrade to the Business Zone and get large tables for working, the widest seats with more legroom than you’ll find on any train service between Birmingham or Oxford and London. Features of our Business Zone include:

- On the London to Birmingham services a complimentary selection of healthy snacks and drinks (subject to availability)
- Complimentary unlimited wi-fi (subject to availability and non-streaming services)
- At-seat power points (subject to availability)
- Modern carriages
- Larger windows

To use the Business Zone you need to pay a peak or off peak supplement.  

On London to Birmingham services a £25 supplement is required per journey to travel in the Business Zone. Business Zone is not first class, and any standard class ticket is valid with a Business Zone supplement, which can be purchased with your ticket (if booking at a station) or simply upgraded onboard.  On off-peak services, the Business Zone supplement is just £10.

You will need to pay a peak supplement to use the Business Zone, between London and Birmingham, on silver trains which arrive into London before 1000 and depart London between 1600 and 1900 on a weekday

Off peak supplements are needed for all other journeys in the Business Zone.

All London to Oxford services are subject to a £10 supplement for both peak and off peak services.  London to Oxford services do not offer a complimentary range of snacks and drinks.

Which services have Wi Fi?

We have complimentary Wi Fi (subject to availability) on all Chiltern Railways trains.  The first time you use our Wi Fi you will need to complete registration.  Once registered your details will be remembered and you can sign in as soon as you board the train.

Free Wi Fi is available at our major stations including London Marylebone, Bicester Village, Warwick Parkway, Birmingham Moor Street and Banbury.  The connection will automatically transfer between train and station without you having to sign in again.

Why is it too hot/too cold on my train?

We are sorry if you have had an issue with the temperature on board our trains, unfortunately the on board train crew do not have control over this. If you do wish to make a complaint about the on board temperature, please contact our Customer Relations team.