Welcome, Cherry!
If the Slimmm shakes are anything like the SlimFast ones, I used them when I started out, but quickly found that I needed more than a shake at breakfast, and that I could balance out my calories and eat real food to start my day, which led to fewer cravings as the day went on.
I'm also in my mid-thirties with two children, but am in Canada. My sister is moving to the UK in June, though, so now I have a good reason to go!