Gaiman 'struggled with Who budget'

Neil Gaiman has revealed that he found it difficult to limit his imagination to match the budget while writing his upcoming episode of Doctor Who.

The writer is currently working on a script for the sixth series of the show. He previously revealed that his currently untitled instalment would air third in the run.

Gaiman wrote on his blog: "The wonderful thing about books and comics is your budget is infinite: it costs the same to draw one thing as another, to write one thing as another."

He explained that he had initially found it difficult to work around Doctor Who's financial restraints.

"That’s not true of television, where a budget might stretch to prosthetics or CGI, but not both." he explained.

However, Gaiman insisted that he was enjoying working on the series.

"Truthfully, I’m not grumbling." he said. "I’m loving writing Doctor Who, and so far, each draft really has been better than the one before."

He added that the latest draft of his Who episode "should be done in the next few days".

The sixth series of Doctor Who is expected to air on BBC One in early 2011.