Until 2008 legislation required all bread sold in the UK to weigh 400g or multiples thereof.
We now have different sizes of loaf offering consumers greater choice and convenience. However many loaves are still sold in 800g (large) or 400g (small) weights.
Breads and rolls weighing less than 300g can currently be sold by number or weight.
UK Bread and Flour Regulations
The Bread and Flour Regulations require that flour should contain not less than 0.24 mg. thiamin (vitamin B1), 1.60mg nicotinic acid (vitamin B3) and 1.65mg of iron per 100g of flour. These amounts are found naturally in wholemeal flour. White and brown flours must be fortified to restore their nutritional value to the required level.
In addition calcium carbonate, at a level of not less than 235mg and not more than 390mg per 100g of flour, is added to all flours except wholemeal and certain self-raising varieties.
This ensures the nutritional value of all bread, whether it is white, brown or wholemeal.
To find out more about these UK regulations please download a copy of the Bread and Flour Regulations 1998: bread-and-flour-regulations