(dupe post, 1st didn't show)

Plod confiscate a desktop PC in connection with a non-sexual non-fraud
based 'crime' (more a disorder than crime, but crime under the law
nevertheless). They are looking for browser and word processing
history. 

Does anyone know;
1.) what checks they are likely to make?
2.) what software they use to scour the disk drive?
3.) do they go digging for anything else like pr0n, emails or keywords
like 'terrorist', etc?

with gratitude.