Is HAD asking for mandatory reburial of all ancient human remains of British provenance?

No. Many Pagans may feel a strong inclination towards reburial, because reburying remains places them back into the cycles of nature. Returning the dead to the earth gives a stronger assurance of peace, the ancestors not being needed or used but, retaining their personhood, allowed simply to be.

However, there are Pagans who find value, interest and inspiration in the stories that come from archaeology and history. (See question below.)

The great majority of Pagans (questioned by HAD) support the reburial of human remains that have no scientific or research potential. Further, they are concerned about the way in which archaeologists and museums store, analyse and display remains, which is often thoroughly depersonalising. The main issue for Pagans here is whether there is any measurable benefit in retaining these uncontextualised human remains, and if so, to whom is it a benefit, and who decides what that benefit is. Most archaeologists agree that human remains with no provenance and no contextual information are useless for scientific analysis.