[Buddha-l] Non-dual scholars?

[STEPHEN BAMBER]

Dear All,

Can anyone point me in the direction of any scholars (ideally UK based)
who are specialists in the comparative study of non-dual traditions (eg.
Dzoghcen/ Mahamudra/ Advaita-Vedanta/ Zen)?

I would be particularly interested to know if anyone has undertaken
research into comparisons between the Christian mystical traditions
(especilally  Orthodox traditions) and Eastern traditions from the
non-dual perspective.  

With thanks and kind regards,

Stephen J. Bamber