I'm currently working the notice period for a job I rather dislike. I happen to have gotten a job with exactly the same rate of pay (we'll say £10).
One perk of my job is that I am paid at full rate for my breaks. I wondered what this meant and wether it would make a difference so I crunched the numbers.
I currently get 30 minutes break on a 6 hour shift, making around 1/6th of my day at work unpaid. (Or 16.7%)
If we deduct this from my current hourly rate it gives a more true result of £8.33/h.
If you wish to argue that breaks should go unpaid, which is a fair point. Then we can go the opposite route, by selecting a job where breaks are paid, it bumps the relative rate of pay up from £10 to £11.67/h.
Either way you look at it it makes a substantial difference. Bare this in mind when selecting a job!