I've started on level 5. That in itself is of interest as in previous digs (prior to finding the ditch) level 5 was where I hit the natural subsoil. But no end is in sight yet. Still, best not to get excited.
The total outcome of level 4 in terms of pieces of pottery (plus a nail and a piece of clay pipe) is shown in the photograph. It is from a mixture of ages. Exactly what they are I will have to get an expert to say.
From previous experience the typical span seems to be Iron Age and Roman with a gap until the 11th century. I have had nothing dated as Anglo-Saxon yet.