He is the editor of the Quackwatch network's weekly electronic newsletter Consumer Health Digest and has written for both professional and general audiences.

[1][8][9][10] While living in Ohio, he planned and delivered training programs in drug abuse prevention for school personnel, for a period of four years.

As the group's representative, he delivered a statement to the White House Commission on Complementary and Alternative Medicine Policy, in which he asked the Commission to recognize "the need to identify health fraud and quackery masquerading as "complementary" and "alternative" medicine" and made four recommendations to that effect.

[14][1][2][15][16][17] He started assisting Stephen Barrett in editing NCAHF's electronic newsletter Consumer Health Digest in 2002 and has served as the editor since 2018.

[1][2][5] London denounces unethical practices of some chiropractors and other alternative health practitioners in the media and specialized publications.