vauxhall combo not starting

[but100k]

hi i have a 53 plate 1.7 diesel combo van its been running fine until had to change battery i put new one on and it started fine but since then its not started again since,i tried some easy start today & it was firing but not starting any ideas of problem would be great.
thanks

 

[Belle427]

first place to start is a new fuel filter but thats a strange one

 

[Mursal]

Might be worth checking All connections arounf the battery, especially the positive terminal