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Fiona specialises in the financial aspects of relationship breakdown, with particular expertise in pensions and is based in our Birmingham office.

Fiona is recognised in legal directories Legal 500 and Chambers and partners as a leader in her field described as "clear concise and very sympathetic" and "pragmatic and sensible-someone who fights hard and fairly for her client". Legal 500 2013 confirms that she "goes that extra mile".

Fiona has a reputation for being an astute negotiator who concentrates on cutting to the core of the issues in a relationship breakdown resulting in prompt resolution whether by settlement or court decision with proportionate expenditure by way of legal costs for her clients.

She has more than 25 years' experience acting for professionals across the economic sector and a significant proportion of her work is referred to her by barristers, judges and other members of the legal professional based upon her reputation across the Midlands.

Fiona is an active member of Resolution (formerly the Solicitors Family Law Association).


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Legal Directory Quote

"Fiona has decades of experience and is dedicated, knowledgeable and a true professional." Chambers & Partners 2020

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"Fiona has decades of experience and is dedicated, knowledgeable and a true professional."

Chambers & Partners 2020

"She has a talent for being able to translate legal issues into simple, everyday language and delivers her advice with objectivity and compassion."

Chambers & Partners 2019

Sources describe Fiona O'Sullivan as "a sensible practitioner who doesn't over-dramatise and looks for the best solution for the client."

Chambers & Partners 2018

'Very industrious, energetic and competent' consultant Fiona O’Sullivan heads Weightmans LLP's family practice in Birmingham, which 'cannot be faulted for the level of service received'. O'Sullivan provides clients with 'invaluable advice' on the financial aspects of relationship breakdowns, including business assets and pensions issues.

Legal 500 2017

"Interviewees describe Fiona as "one of the best solicitors in the Midlands market, giving top-rate advice and excellent value to clients.""

Chambers & Partners 2016

"Fiona O'Sullivan of Weightmans LLP is highly regarded, and 'always seems to establish a good rapport with clients'."

Legal 500 2015

"Highly respected practitioner Fiona O'Sullivan is praised by one source as "a brilliant all-round lawyer." She is head of the Birmingham family team, and has experience in pensions, business assets and prenuptial agreements. Sources highlight her "sensible, conciliatory, calm and direct" approach."

Chambers and Partners 2017
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