There's no statutory breaks for a shift under 6 hours.
Soul destroying? Degrading? I was on JSA for just under a month in between my last job and my current one, I didn't find it embarrassing - I was entitled to it and I knew I was actually going to be getting back into work as soon as possible.
The telling moment for me was when I when in for the last time to tell them I had just taken a job, and the woman was shocked I'd found one so quick.