Plans for a private prosecution against former Home Secretary Jacqui Smith alleging fraud over her second home expenses claims have been dropped.
Anthony Weaver, from Holborn, central London, alleged Ms Smith had defrauded the public purse by claiming her main residence was her sister's London home.
She said her second home was her constituency home in Worcestershire.
Mr Weaver, 62, said he would not proceed as he could not afford any possible future legal costs.
He wanted to prosecute Ms Smith under Section 2 (1) of the Fraud Act 2006.
Ms Smith, who resigned from her post earlier this month, has insisted she "fully abided" by the rules of second home claims.
In May Mr Weaver applied for a summons before a district judge in Ms Smith's Redditch constituency alleging she defrauded the public purse of between £116,000 and £200,000.
The judge adjourned the case and advised the self-employed tour operator to contact the Metropolitan Police.
Mr Weaver's application for a summons was due to be heard at City of Westminster Magistrates' Court on Tuesday.
The bid for a private prosecution came after a complaint was made in February to the parliamentary standards watchdog.
It centred around Ms Smith claiming allowances on her Redditch constituency home while living as a lodger with her sister in south-east London.