Where is Christopher Allan [CDA]?

For those who don't know CDA, this is from Wikipedia:

"The mystery was finally unravelled [sic] in 1986 as a result of research by Christopher Allan and Steuart Campbell which was published in the skeptical Fortean journal Magonia."

The note (above) is inside Wikipedia's account of the Allingham/Martian flying saucer scandal:

https://en.wikipedia.org/wiki/Cedric_Allingham

CDA has been a regular commenter here and at his favorite blog: kevinrandle.blogspot.com

Neither I nor Kevin have heard from him lately and we're concerned. CDA has had a health issue which exacerbates our concern.

I sent Christopher an e-mail over a month ago but have gotten no response, and in the past he has gotten back to me promptly.

I've also asked some of his Brit friends and neighbors about him without a resolve either.

This is worrisome.

RR