what are their current research?
Extensive research is ongoing on whether British Celtic did exert subtle substrate influence on the phonology, morphology, and syntax of Old English
Anglo-Saxon settlement of Britain
Extensive research is ongoing on whether British Celtic did exert subtle substrate influence on the phonology, morphology, and syntax of Old English 
what is alberht of east anglia? An eighth-century ruler of the kingdom of East Anglia. when was his reigning period? Ruled 749 – about 760 did he share his kingdom with anyone? With Beonna who is he? A Mercian and who took the lead in issuing regnal coinage and maintaining a military alliance with Æthelbald, king of Mercia. can you tell me the history of the aforesaid kingdom? Kingdom of East Anglia, was a small independent kingdom of the Angles comprising what are now the English counties of Norfolk and Suffolk and perhaps the eastern part of the Fens. when was the kingdom formed? Formed in the 6th century in the wake of the Anglo-Saxon settlement of Britain. can you tell me more about this wake? It is the process which changed the language and culture of most of what became England from Romano-British to Germanic. what can you tell me about its historical evidence? The few literary sources tell of hostility between incomers and natives. They describe violence, destruction, massacre, and the flight of the Romano-British population. what about its archeological evidence? Archaeologists seeking to understand evidence for migration and/or acculturation must first get to grips with early Anglo-Saxon archaeology as an "Archaeology of Identity".
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Anglo-Saxon settlement of Britain [SEP] Current research
Extensive research is ongoing on whether British Celtic did exert subtle substrate influence on the phonology, morphology, and syntax of Old English (as well as on whether British Latin-speakers influenced the Brittonic languages, perhaps as they fled westwards from Anglo-Saxon domination into highland areas of Britain). These arguments have not yet, however, become consensus views. Thus a recent synthesis concludes that 'the evidence for Celtic influence on Old English is somewhat sparse, which only means that it remains elusive, not that it did not exist'. Debate continues within a framework assuming that many Brittonic-speakers shifted to English, for example over whether at least some Germanic-speaking peasant-class immigrants must have been involved to bring about the language-shift; what legal or social structures (such as enslavement or apartheid-like customs) might have promoted the high status of English; and precisely how slowly Brittonic (and British Latin) disappeared in different regions.