I'd try asking the Medieval Dress & Textiles Society (MEDATS). I'm pretty
sure there are quite a few articles on the subject around so I'm sure
they'll be able to direct you to the best.
Their web site is
Subject: Anglo Saxon Embroidery
>Does anyone know what were the common stitches, techniques or patterns
>in Anglo Saxon England. Can anyone point me towards any reliable and
>accurate websites or know of any evidence of certain stitches + patterns
>Thanks in advance.