The UK Recommended List contains 40 wheat varieties, of which at least half are used by flour millers.
Wheat varieties are classified using the nabim system:
Group 1 - Varieties that produce consistent milling and baking performance
Group 2 - Varieties that have bread-making potential but are not suited to all grists
Group 3 - Varieties that are soft and suited to making biscuit, cake and other flours
Group 4 - These varieties are grown mainly as feed wheats
The nabim Wheat Guide, produced annually can be downloaded here. Alternatively, hard copies can be requested by contacting nabim at firstname.lastname@example.org
The HGCA Recommended Lists for cereals and oilseeds can be obtained on their website.