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Sonia Nolten

Work 020 7822 1200
2TG – 2 Temple Gardens (2TG – 2 Temple Gardens)


An experienced commercial litigator who practises in insurance, banking, commercial fraud and professional negligence. Sonia recently appeared in the Supreme Court in the EL Trigger Litigation. It concerned liability of EL insurers to pay for asbestos-related disease arising out of exposure many years previously. This is the first time that the highest court had considered the Employers Liability (Compulsory Insurance) Act 1969 and provided an important clarification of the law on the construction of contracts, concerning the scope of the admissible factual matrix, the determination of the commercial purpose of a contract and the parameters of custom and practice. She also appeared in the leading case on policy triggers in public liability insurance, Bolton Metropolitan MBC v Municipal Mutual Insurance Ltd [2006] 1 WLR 1492. Sonia is regularly instructed in disputes arising out of a wide range of covers (eg professional indemnity, business interruption, public liability, EL, litigation protection, property, motor). She also has a high profile for her work in the life and health insurance market. She acts for and against banks in a range of banking and financial services claims including: fairness of standard terms, breach of mandate, bills of exchange, and the obligations imposed by FSMA and POCA. In Titan Steel Wheels v Royal Bank of Scotland [2010] EWHC 211 (Comm) she was instructed in connection with Titan’s appeal against the judgment of David Steel J in a case concerning the fairness of the bank’s standard terms and conditions excluding liability for advice given on a complicated currency swap contract. She appeared again in the Supreme Court in BAI (Run off) Limited (In Scheme of Arrangement) v Durham (and 5 other actions) [2012] UKSC 14, which provided an important clarification of the law on the construction of contracts, concerning the scope of the admissible factual matrix, the determination of the commercial purpose of a contract and the parameters of custom and practice. In the high value professional negligence claim Dennard v PricewaterhouseCoopers LLP [2010] EWHC 812 (Ch). Sonia, led by Paul Downes QC acted in the alleged negligent undervaluation of a PHI company by £25-£40m; it is the leading recent case on application of band theory to valuers’ negligence claims.


Called 2002; Inner Temple; appointed to Treasury C Panel 2009.


French, German, Russian.




Wilsthorpe School, Nottingham; Oriel College, Oxford (1995 MA; 1996 Master of Studies); City University (2000 CPE).


Theatre, Latin dance and music, fitness

London Bar

Insurance and reinsurance

Within: Insurance and reinsurance – Leading juniors

Sonia Nolten - 2TG – 2 Temple GardensShe provides practical advice, high-level technical expertise and responsiveness.’

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Professional negligence

Within: Professional negligence – Leading juniors

Sonia Nolten - 2TG – 2 Temple GardensHer advice – whether oral or in writing – is always clear and concise.’

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    Most recently, the Bulgarian Energy Regulator has taken significant steps towards the full liberalisation of the natural gas market: In December 2016, the Bulgarian Energy Regulator adopted legislative amendments to the Rules for Trading of Natural Gas ( Правила за търговия с природен газ , " Trading Rules ") and the Rules for Access to the Gas Transmission and/or Gas Distribution Networks and the Natural Gas Storage Facilities ( Правила за предоставяне на достъп до газопреносните и/или газоразпределителните мрежи и за достъп до съоръженията за съхранение на природен газ , " Access Rules "). Moreover, it adopted new Rules for Balancing of the Natural Gas Market ( Правила за балансиране на пазара за природен газ , " Balancing Rules "). read more...
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    On 7 March 2017, the Hungarian parliament adopted a law that increases the minimum sale price of a residential property in the enforcement procedure from the current 70% of its market value to 100% (market value to be understood as the price set by the appraisal of the bailiff), provided that (i) the claim to be enforced stems from a consumer contract; (ii) the real property is the debtor's only real property; and (iii) the debtor resided in that real property for at least six months prior to the initiation of the enforcement procedure.   read more...
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