Dr Liam Fox and Adam Werritty
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Questions remain after Liam Fox's resignation

Liam Fox resigned from his role as defence secretary on Friday but questions remain over his working relationship with friend and self-styled adviser Adam Werritty.

Dr Fox had been under pressure after it emerged that Mr Werritty had met him 22 times at the MoD and joined him on 18 overseas trips since he came to office last year - despite having no official role.

The BBC's James Landale reports.