Misselling is the deliberate, reckless, or negligent sale of products or services in circumstances where the contract is either misrepresented, or the product or service is unsuitable for the customer's needs. For example, selling life insurance to someone who has no dependents is regarded as misselling. There is no legal definition of "misselling" in the U.K.
Various common types of misselling may occur. More recently, banks have been at the center of misselling with products such as ISAs and investments. Another type of misselling is the one that took place in Cyprus during the period 2003-2010 where over 900 victims were missold foreign currency loans (mainly CHF) to finance the purchase of Cypriot lease holds. https://commonslibrary.parliament.uk/research-briefings/sn06578/
This may include misrepresentation of the commercial situation.
The sale of unsuitable products, such as invalid insurance, is misselling, and has led to substantial compensation orders.
Financial misselling refers to deliberate false statement made by individual, usually a financial organization representative to sell off their financial products or services usually not profound to the customer. For example, HomeServe, an emergency home repair insurance company based in the United Kingdom, was fined £30m for misselling to its customers by the Financial Conduct Authority in February 2014, as they had failed to explain the actual price and the coverage of their financial products. According to a news in The Telegraph, Britain's financial services industry has PPI (payment protection insurance, (sold with credit cards) claims worth around £13bn from 2008 to early 2014. Another on going misselling scandal relates to interest rate swaps sold to small and medium enterprises by UK banks.
Between the years 2003 and 2010, Cypriot banks suggested to buyers interested in acquiring property in Cyprus to take out a mortgage in foreign currency loans (mainly CHF) because the interest rates were lower. Thousands of mainly British residents took this advice but this backfired when the franc soared after the financial crisis, and mortgage repayments doubled. Lawyers say that the banks often failed to explain the potential risks of currency fluctuation that could cause repayments to rise, and also applied heavy interest rate rises. https://www.theguardian.com/money/2013/dec/04/cyprus-property-mortgage-mis-selling-britons Many people have struggled to keep up with their repayments.
Moreover, instead of an absolute title to their property, the Republic of Cyprus gave them rights to a property, which if and when built, would be in someone else’s land and be subject to charges by lenders and other creditors until the titles could be separated. The separation of titles could take many years because instead of separating them before sale, the state accepts separation after the development is completed and proves fully compliant with planning. The chances of compliance are slim considering that planners require that they meet building regulations at the time of final inspection and not at the time permission was granted which ends up becoming a catch-up game between planners and developers. In the meantime, purchasers are at risk that the land could be foreclosed by creditors. In this way, the state punishes the purchasers for possible planning breaches by the developers while allowing creditors to have the benefit of security over the land on which off-plan units have been sold. All at the expense of foreign purchasers and in favor of local creditors. 
This has resulted in property owners facing unsaleable and unlettable apartments, gigantic loan obligations and negative equity following the collapse of the Cypriot property market.
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- "Investment Mis-selling: The Facts". goodwinbarrett.co.uk. 2016-01-20. Retrieved 2016-01-20.
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- "BBC News - Santander profits hit by PPI mis-selling costs". Bbc.co.uk. 2011-07-27. Retrieved 2012-03-23.
- Hilary Osborne (13 February 2014). "HomeServe fined £30.6m for poor complaints handling and mis-selling". Theguardian.com. Retrieved 3 March 2014.
- Nicole Blackmore (13 Feb 2014). "HomeServe fined £30m for mis-selling to 70,000 customers". Telegraph.co.uk. Retrieved 3 March 2014.
- Szu Ping Chan (22 Feb 2014). "PPI mis-selling claims 'have yet to peak'". Telegraph.co.uk. Retrieved 3 March 2014.
- "Interest rate hedging products (IRHP)". FCA. 18 February 2016.
- Click Law Partners Residual Losses Claim pdf