Hickman is well versed in many Who topics, but especially prop history. With Gareth Roberts, he co-wrote both the Comic Relief sketch, From Raxacoricofallapatorius with Love and the Series 4 finale, Goodbye, Sarah Jane Smith. Hickman's writing credits for the televised Doctor Who universe have been confined to The Sarah Jane Adventures. He was the primary designer of Region 2 and 4 Doctor Who DVD release covers, until being superseded by Lee Binding in 2012. He also provided the voice of the Daleks for the story The Time of the Daleks. He designed a large proportion of the company's early CD covers, and co-wrote The One Doctor and Bang-Bang-a-Boom! with Gareth Roberts. Hickman also had an important role to play in the production of many early Big Finish Productions audio dramas. He also shepherded the creation of yet another Panini series, Doctor Who Magazine Special Edition, whose issues took in-depth looks at particular Doctor Who topics. He was instrumental to Panini's digital restoration and reprinting of their catalogue of comic strips in graphic novel format, beginning with The Iron Legion. He also established the tradition of Panini publishing an annual, first with the 2006 Doctor Who Annual and later with Doctor Who Storybook line that began in 2007. Indeed, he co-wrote the first of the 'new series' comic strips, The Love Invasion, with frequent collaborator, Gareth Roberts. As a part of his duties, he was also one of the key creatives on the comic strip, primarily during the Eighth, Ninth and Tenth Doctors' runs. One of his most notable achievements was the magazine's radical redesign at the start of the BBC Wales version of Doctor Who. He remained the magazine's editor until issue #386 in 2007.

In DWM 316, Hickman established the comedic persona ' Sorvad' in the first Space-Time Telegraph Hickman's 'Sorvad' would pop up occasionally during his editorship, eventually featuring in the regular feature Matrix Data Bank. He was officially credited as assistant editor on issue #296 in 2000 and remained at that post until taking over the full editorial reins from Alan Barnes with issue #314 in 2002. Hickman was the dominant editorial voice on Doctor Who Magazine for most of the first decade of the 21st century. 1.3 Involvement in televised Doctor Who.

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