Grant Shapps gave entrepreneurs tour of parliament as 'Michael Green' Tory chairman, Grant Shapps, addresses the recent party conference. Photograph: Richard Sellers/Allstar The Conservative party chairman, Grant Shapps, gave a guided tour of parliament to his internet business associates as his alter ego Michael Green and bought them dinner in a Commons restaurant when he was a Conservative backbencher, the Guardian can reveal. Shapps, in his guise as the multi-millionaire web guru in charge of the internet marketing company How To Corp, invited three internet entrepreneurs - Harvey Segal, Mani Sivasubramanian and Martin Avis - to Westminster in 2006 for the tour and an evening meal. Details of the event emerged on an internet forum run by Segal, but disappeared from the site just hours after the Guardian approached him for a comment. However the Guardian kept a copy of the website on which Segal recalled how he met "three top marketers in a very big HOUSE" - naming Michael Green. Last week I was given an exclusive night-time tour, amidst high level security, at one of the most famous places in London - the Houses of Parliament. Accompanied by 3 top Internet marketers. With no one else present. Apart from a watching policeman. But as he watched us I too was watching and observing my colleagues - to work out what made them so successful. Labour said the meeting raised questions about whether Shapps, who attends cabinet, broke parliamentary rules which set out where MPs can "transact business" in Westminster. It follows a series of revelations about the MPs' family firm and his use of an alter ego. This week How To Corp's website was replaced by a helpdesk offering support to existing customers. It has effectively ended the public's chance to download Michael Green's How to Bounce Back from Recession, or pay $497 for TrafficPaymaster, a product that the Guardian revealed broke Google's code of conduct by inflating a site's revenue through apparently plagiarising content. Steve McCabe, the Labour MP who has called for Shapps's family firm to be investigated by the police for possible fraud and copyright violations, said: "Using parliament to further your own 'get rich quick' spivvery is simply beyond the pale. It appears Mr Shapps has been using his position to impress his business partners, which might well be in breach of the rules of parliament. Every day new allegations emerge and he is already facing potential criminal charges. However a source close to Shapps said the tour and dinner was arranged for "his friends" just a year after he was elected as an MP. The source denied that Shapps had infringed any of Westminster's rules. He paid for dinner in a Commons restaurant. There's nothing to declare ... it was not in a private dining room. Shapps had business connections with all three businessmen. In Michael Green's How to Profit from Your Diary, Shapps reveals he had "done a lot of JVs (joint ventures) together" with Sivasubramanian, a child heart surgeon based in Chennai who in 2005 made $25,000 a year from his online business - and used 40% of this cash to fund charitable work in India. I actually got to meet (Sivasubramanian) in the end. And as everybody probably online knows now, (he) spends the money he makes, or a lion share of the money he makes, providing heart operations for kids in India ... now I guess to use (his) profit diary approach, he would use a diary like this and he'd say - you know I've had conversations when he came for dinner. Segal and Avis promoted Michael Green products. Segal's website used to have a page devoted to Michael Green whom he described as creating "one of the biggest internet marketing forums." Avis ran lunches for would-be internet marketing entrepreneurs which highlighted Michael Green's offer to make $20,000 in 20 days "or your money back." Both men are pictured on the web having dinner with Shapps in Convent Garden in 2004. Neither Segal nor Avis would agree to answer questions regarding Shapps or Michael Green. The Tory chairman left How To Corp in 2008 - handing his share over to his wife, Belinda. The Guardian has established that Michael Green registered the website of TrafficPaymaster. Sources close to the Tory chair said that "by then Belinda had taken over as Michael Green."