have just travelled on tghe Northern Line from Wterloo to Woodside park.



The carriage in which I travelled had seats of a type that I have not expereinced before.



They have a small amount of padding on a base that appears to be completely flat, having has no anatomic curvatore.



I am no longer young. InitiallyI found the seat extremely unconfortable, After the train left the tunnel at East Finchley the jolting began to hurt me, I was also sliding from side to side over the jolts.

When I lert the train by bottom contniued to hurt and still hurts one hour after having returned home.



Please could you explain why I have had this horrible experience.



Thank you