Two men and two women have been arrested as part of an investigation into a suspected multi-million pound phone scam targeting UK taxpayers.\r\n\r\n\r\n\r\nHMRC officers carried out searches at five addresses in East and West London on Tuesday 28 July. Some \u00a310,000 in cash was seized along with a quantity of laptop and desktop computers, mobile phones and SIM cards.\r\n\r\nThe four were arrested and questioned by HMRC on suspicion of money laundering offences. Investigations are ongoing.\r\n\r\nRichard Mayer, assistant director, Fraud Investigation Service, HMRC, said: \u201cCriminals use a range of techniques in tax-related phone scams, including calling unsuspecting taxpayers to offer a bogus tax refund, or threatening them with arrest if they don\u2019t immediately pay fictitious tax bills.\r\n\r\n\u201cThese scams often target the elderly and vulnerable. We are a well-known brand, which criminals abuse to try and add credibility to their scams.\u201d\r\n\r\nHe added: \u201cIf someone calls, emails or texts claiming to be from HMRC, saying that you can claim financial help, are owed a tax refund or owe tax, and asks for personal or bank details, it might be a scam. Check GOV.UK for information on how to\u202frecognise genuine HMRC contact.\r\n\r\n\u201cIf you can\u2019t verify the identity of the caller, we recommend that you do not speak to them. I would urge anyone with information on these types of scams to report it to HMRC online.\u201d\r\n\r\nIn the last 12 months HMRC reported 1,742 phone numbers being used in tax-related phone scams to telecommunication companies for takedown, and responded to more than 203,000 reports of phone scams from the public - an increase of 95% on the previous year.