The Anglo-Saxon period of British history begins in the 5th century with the exit of the Romans and continues until the 11th century and the Norman Conquest of 1066. The Viking invaders started to have an impact on Britain from the 7th century onwards, with the Norse becoming more integrated into society towards the end of the period.
The bread baking methods and grain used by both Saxons and Vikings are so similar as to an indistinguishable bread culture. The main grains used in Northern Europe are barley, einkorn wheat and rye. Spelt wheat becomes more commonly used as you move south in Europe.
The bread was enhanced using seasonally available and stored items like flax seed (Linseed), honey and herbs. Vikings were raiding Britain to supplement their poor harvests with pillaged food products. The climate in Norway and the availability of good farming land was insufficient to support the Norse population. Expansion was the only real option left to these people.
Most of the bread baking was done on skillets, griddles or flat fire pans. The wealthy would probably have a basic bread oven made of clay with the baking door at ground level. This is a development that persisted from Roman baking practices. Baking would have been done away from timber buildings to reduce the risk of fire hazards.
Nuts, stinging nettles, flowers and leaves of herbs were often used as flavour enhancers in bread. There would have been a great knowledge of the efficacy of such food additives and their use in Saxon times. This is something that is partly lost in modern times.