17 April 2025
Alastair trained with Sharpe Pritchard, qualified in 1992 and has been a Roll A Parliamentary Agent and partner for over 25 years.
Alastair acts for clients in the public and private sector promoting and opposing major infrastructure schemes and advising on legislation and public law.
His infrastructure work requires specialist knowledge of planning law, compulsory purchase, environmental impact assessment, habitats and highways law and practice.
As a Roll A Parliamentary Agent, Alastair is one of a very small number of lawyers entitled to draft and promote and also oppose private and hybrid legislation in Parliament. Since he qualified, he has promoted more private Bills in Parliament than any other agent.
Alastair advises on development consent orders (DCOs) for nationally significant infrastructure projects (NSIPs), on Transport and Works Orders (TWA Orders) for transport schemes and harbour revision orders for port and harbour works and management.
He drafts primary and secondary legislation (including procedural rules and charters) and drafts amendments to government Bills and advises on Parliamentary procedure and strategy.
Alastair advises on public law issues generally, including statutory interpretation, vires, equalities, consultations and standards.
The work that Alastair does is mostly very specialised and for many clients it is novel. Alastair always explains unfamiliar and new concepts in non-technical language.
Alastair’s work also requires meticulous attention to detail and often requires an ability to encapsulate difficult concepts in drafting that is clear and easy to understand. He often works alongside other lawyers (both in house and in collaboration with other firms) and one senior “silver circle” lawyer recently described Alastair as the best drafter they had ever come across.
As client care partner for the firm, Alastair understands the need for clients to have advice that is clear, commercial, and delivered in accordance with clients’ expectations on timescales and budgets. He ensures that clients are kept informed of how work is progressing on both fronts.
Alasdair Lewis and Emyr Thomas are exceptional in their field, with a very practical but polished approach to the particular peculiarities of the Parliamentary machine.
Legal 500 2023
Emyr Thomas, Andrew Swaffer, Aidan Dickinson and above all Alastair Lewis are all exceptional solicitors, who I have only good things to say of
Legal 500 2021
Alastair Lewis is hard-working, diligent, approachable, and has a keen insight into how to present the best case for the client.
Legal 500 2021
We find Alastair Lewis is particularly outstanding. He has a down-to-earth, friendly, and engaging manner with clients.
Legal 500 2021
He's very easy to get on with and he can make things simple to understand.
Chambers and Partners 2019
Brilliant, personable and knowledgeable
The Legal 500 2019
17 April 2025
4 February 2025
The planning reform spotlight has been beaming down on the Nationally Significant Infrastructure (“NSIP”) regime in recent weeks, with a new Government policy paper Streamlining Infrastructure Planning published on 26 January. The Government’s ambition to decide 150 Development Consent Order (“DCO”) applications during this parliament would represent a significant achievement which the working paper acknowledges…
Read more29 February 2024
It’s been (another) year in which the Government has tried to carry out the tricky balancing act between getting more houses built and living up to its green credentials. Last year, we reported on the Levelling-up and Regeneration Bill, which was finally enacted on 26 October 2023. In 2023 we helped clients draft amendments to…
Read more16 February 2024
On the 12 February 2024, mandatory Biodiversity Net Gain (“BNG”) officially arrived! As we outlined in our last article, “Biodiversity Net Gain is a Reality: The Basics”, every grant of planning permission for a major development (unless exempt) will now be subject to a deemed condition to secure at least a 10% increase in the…
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