There is very little difference between the Red Tractor standards and the legal minimum UK requirements.

You can basically ignore when it comes to animal welfare standards. It just means that the animal lived in the UK and was treated in line with minimum legal requirements. It's funded by the British farming and food industry so it has an awkward self-interest in selling more stuff rather than improving welfare.

The label allows for intensive production and is not a ‘guarantee’ of good animal welfare.

Breeding sows can be confined in metal cages for up to five weeks during each pregnancy cycle and piglets can be kept permanently indoors, often on bare concrete or slatted floors.

Pigs may suffer from inadequate environmental enrichment, antibiotics overuse, routinely tails and cut off and teeth maybe clipped without anaesthetic.

The minimum UK requirement for chickens is 39kg per square-metre, which means each chicken has about the space of an A4 sheet of paper to live in. The Red Tractor allows chickens to be stoked up to 38kg per square-metre. Only 1kg less.

To muddy the waters even more, there's a sub-label called 'Red Tractor Enhanced Welfare' that has slightly better animal standards, but still not even up to the RSPCA Assured levels.

As a final nail, Red Tractor is not strongly enforced either with numerous violations [see citations] of their standards not being punished. Figures on their own site state that over a 1000 members are suspended every quarter for violations...