My family always buy Aldi's Lodge Farm free range eggs which we thought was a good choice. But after looking at the animal welfare guide to free range eggs, I realised how the definition of 'free range' is different for each company. So I started researching the brand and can't find anything about it. Does anyone know if they prohibit beak trimming, wing clipping, toe trimming, de-snoodling, devoicing and dubbing?? Thanks!

Unfortunately there is no hundred percent way to confirm the welfare of free range hens without contacting the company and requesting footage or a visit of the farm with a specified statement of their mandatory operations on the hens.
There is also a dark side to the egg industry as previously mentioned,
they are all bought from the same hatcheries where it is standard to grind or gas alive any male chick which is identified by a different shade of yellow.
https://www.youtube.com/watch?v=PCBtkVSk3OU This video consists of Jamie Oliver demonstrating at a gala dinner the process of gassing chicks.
If you and your family insist on eating eggs, your best bet is to request visiting the farm, or finding close friends, family or people you can visit to purchase home eggs from.
Or even better, look into rescuing battery hens, giving them the opportunity of a second life, and they will happily produce eggs for you and your family for a long time!