You can make your own. I soak oats in almond milk (you can also use either milk or soya) over night. I add pumpkin, sesame, sunflower seeds and linseeds. You can then add chopped apricots or raisins. If you like it sweet you can grate apple into it or add agavi syrup which is low glycemic unlike sugar. Health food shops sell it.
I guess I could keep a box of the seeds or nuts premixed and add as needed!
I just can't understand why it should be beyond the wit of Asda, for instance, to recognise that we don't all need our muesli baby-sweet! They're cutting back on salt in other things (though only after their hand was forced!) but whenever they do cut down sugar, they bump up fat or add aspartame.
God, is it any wonder there's a obesity problem in this country??!
Most supermarkets do a muesli that is no-added sugar, it's just a case of having a look at the ingredients. My favourites are the Jordan's one and Dorset Cereals. Dorset Cereals are more expensive but have lots more fruits and nuts in.
Morrisons own brand museli is great. It's based mainly on oats, so you don't get that horrible bloated feeling from the other types of muesli. It also has quite a few nuts in and fruit. I add my own blueberries and various seeds.
I second the vote for Lidl's, it's scrummy. We have it for breakfast when we visit my mum.
Unfortunately we don't have a Lidl close by, but we also like Jordan's Nut and Seed muesli. Delicious but pricey. Definitely not the lowest calorie muesli on the block (packed with nuts!) but all good scran and you don't have to eat a lot of it. Just as well given the expense.
Our local Tesco has just started stocking it, which is great as previously DH was having to do a detour to Asda on his way home from work to GET ME MY MUESLI!!!! [bangs spoon on table repeatedly]
I also LOVE Dorset Cereal high fibre muesli...it's expensive, but I can't eat a huge fulin one sitting (it really is filling!), so one box does last me at least 2 weeks. I've tried a few others, but I keep going back to that one.