Handing in notice but with slight trepidation

[AHarvey]

But you never know when you might meet them again in a different company. In specialised fields people might move around regularly and you could end up sitting across from your old boss that you personally insulted five years ago at your interview.

If you're staying in the same field. I've only burnt bridges on 2 jobs by telling them exactly what was wrong with the place and who they need to sack to get things working. I'll never go back into that industry to work and I doubt I'll ever meet them again.

Also depends how you burn them I suppose, calling a director a ****womble probably isn't the best way to burn bridges as you say, but simply being completely honest about why you're leaving is enough to burn bridges with some companies.