Fiona Garside is an expertise counsel in our antitrust, regulatory and trade practice
Fiona has advised on a wide range of EU and UK competition law matters, including cartel investigations, merger control, market reviews/investigations and competition law compliance, with particular experience in financial services. Her role includes working on client briefings and external publications, as well as training and internal legal support.
Latest thinking
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Legal development 
Government consults on reforming UK competition regime
22 Jan 2026
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Legal development
Antitrust, Regulatory & Trade newsletter: your Q4 2025 update
15 Jan 2026
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Podcasts 
Mergers 2026 – One year on from the CMA's pivot to the Government's growth agenda
15 Jan 2026
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Legal development
CMA publishes revised guidance on merger remedies
08 Jan 2026
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Legal development
CMA publishes updated guidance on UK merger procedure
11 Nov 2025
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Legal development
The Winner Takes It All? CMA updates leniency policy
04 Nov 2025
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Legal development
CMA opens the door to behavioural remedies in merger cases
20 Oct 2025
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Legal development
Antitrust, Regulation & Foreign Investment Q3 2025 newsletter
14 Oct 2025
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Legal development
Key takeaways from the fourth UK NSIA annual report
19 Sep 2025
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Legal development
Competing for talent: CMA guidance for HR teams on compliance with competition law
10 Sep 2025
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Quickguides 
Competition Quickguides
09 Sep 2025
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Legal development
High Court rejects second judicial review challenge of NSIA final order
12 Aug 2025
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