Overcrowding on Chiltern Railway services in Buckinghamshire has been raised in parliament.
Buckingham MP Greg Smith challenged the Transport Secretary on the impact Avanti failures have had on displacing Birmingham to London passengers, who would ordinarily travel on Avanti, being displaced onto Chiltern services - in part creating the overcrowding.
The Buckingham MP is hosting a roundtable with Chiltern Railways next week in Parliament.
Mr Smith is calling for local people to email him about their frustrations with Chiltern so he can ensure they are raised with their senior management.