Warranty: Why not simply ask Corby? You should be able to find a website for them.
Repair. Shame you didn't use Google search; you'd have found these:
https://howtomendit.com/answers.php?id=46036
http://spares2go.co.uk/trouserpress.html
https://www.corbyofwindsor.com/store/uk/category/275/accessories/trouser-press-spares-&-accessories
I also note the page at the end of the last link also includes on the page banner: 3 YEAR WARRANTY
acp
July 2017