Chiltern Railways run regular passenger train services along the M40 corridor between London Marylebone and Birmingham Snow Hill and also run trains between London Marylebone and Aylesbury via Amersham.

Chiltern operate services on four routes.

• Chiltern Main Line
• London to Aylesbury Line
• Princes Risborough to Aylesbury Line
• Leamington to Stratford Line

The London to Birmingham route used by Chiltern Railways goes via High Wycombe, Bicester, Banbury, Leamington Spa, Warwick and Solihull.

The line to Aylesbury via Amersham shares tracks with London Underground's Metropolitan Line between Harrow-on-the-Hill and Amersham.

In 2002 Chiltern Railways extended their operations as far as Kidderminster and in 2004 took over services between Stratford-Upon-Avon and London.

Using the RailEasy™ train ticket price checker and Rail Saver reservation service to complete an online Chiltern Railways train ticket reservation is quick and easy.