SCSC - The Safety-Critical Systems Club


SCSC Survey

Please take a moment to complete this short survey on the Safety Critical Systems Club to help us move forward. The survey has been designed with all systems safety professionals in mind and you don't need to be a member of the club to complete it, in fact non-members are encouraged to give us their thoughts!

There is a prize draw for all those who complete the survey and leave contact details. Prizes include a free day at SSS'20, free attendance at a 1-day SCSC event of your choosing (e.g. seminar, tutorial) and free annual memberships.

SSS'20 - Call for Poster Abstracts Now Open

The call for poster abstracts for SSS'20 (11-13th Feb 2020 in York, UK) is now open. There will be two poster sessions at SSS'20; for those who have not done one before posters are a great way to present and discuss new work in a more informal setting. 

Changes to SCSC Steering Group

Following Tim Kelly's move to his new role, the current Steering Group composition is:

Tom Anderson, University of Newcastle - Honorary Steering Group Member

Robin Bloomfield, Adelard

Stephen Bull, Ebeni

Dewi Daniels, Software Safety Ltd

Jane Fenn, BAE Systems

Paul Hampton, CGI - Newsletter Editor

Louise Harney, Leonardo

Stuart Harrison, ex-NHS

James Inge, MoD

Brian Jepson, ex-BAE Systems - Website Editor

Graham Jolliffe, Consultant - Steering Group Chair

Tim Kelly, University of York - Honorary Steering Group Member

Alex King, University of York - Club Manager

Mark Nicholson, University of York - University of York Coordinator

Mike Parsons, CGI - Club Director and Events Coordinator

Roger Rivett, ex-Jaguar Land Rover

Phil Williams, Consultant

Further information on the SCSC Steering Group is available here.

Tutorial on Safety Assurance of Autonomy and Machine Learning

This 1-day tutorial is on September 26th 2019 in London. It includes speakers from the AAIP at the University of York and from industry. It considers the assurance of systems that employ Autonomy and Machine Learning; critically important for future air, sea and road vehicles. Full details at:

Learning from Accident Investigations

This seminar on June 13th 2019 in London considered what can be learnt from formal accident investigations, including the process, people and the detailed accident reports that are produced in many sectors. Full information, including selected slides, at:

Safety-Critical Systems Symposium 2020 - Call for Abstracts

The call for abstracts for SSS'20 (11th-13th Feb 2020 in York, UK) has now closed.

Seminar - Evolution of Assurance Case Practice

On April 4th in London, the SCSC held a 1-day seminar on the future of assurance and safety case practice. This looked at new thinking in the automotive and civil aviation sectors and new developments such as SACM and Dialectic arguments . It also examined what a safety argument for an autonomous system might look like. Selected slides are now available on the event page.


The 27th Safety-Critical Systems Symposium (SSS'19) was held in Bristol, UK at the Bristol Marriott Royal Hotel from 5th to 7th February 2019. See the event listing in Past Events for slides and papers.

Seminar - COTS, Legacy and Reuse

This seminar was held on 6th December in London and featured seven talks from acknowledged experts in the reuse of existing components, be they COTS, SOUP or other legacy items, when an assurance claim for the overall system or service must be made.

Selected slides from the event are now available.

Tutorial - An Introduction to Human Factors

This tutorial was held in London on 27th September 2018 and provided an overview of the principles, concepts and issues relating to Human Factors in a safety context. It featured three speakers: Jocelyn Clark from NATS, Ben McCaulder from Greenstreet Berman Ltd and Nicole Saunders from Osprey CSL. Rebecca Canham from Greenstreet Berman Ltd was there to support and run the Q&A session. Selected slides are now available.


Seminar - Safety of the Internet of Things (IoT)

This seminar looked at the safety risks of IoT, many related to security concerns. Selected slides are now available on the event page.

Call for Abstracts for SSS'19

The Safety Critical Systems Symposium 2019 call for abstracts has now closed.

Details can be found on the event page.

The symposium will be held in Bristol, UK from 5th to 7th February 2019.

Seminar - Eye of the ISA on highly automated vehicles 

The Independent Safety Assessors' (ISA) working group seminar focussed on the challenges associated with highly automated and autonomous transportation. Selected slides are now on the event page.

Seminar - Safety and Security Integration

This one-day event in London featured talks from domain experts on how to integrate these two critical aspects through combined methods and techniques. Slides are on the event page.

Data Safety Guidance

The PDF of the new Data Safety Guidance document (V3.0) is available for free download.


SSS'18 was held in York and was very successful. Various outputs are available. Please see the event page.

Drones and UAS Seminar

Selected slides are now available from the 1-day seminar "Drones and Unmanned Aerial Systems: How Can We Ensure Safe Flight?" looking at the system aspects of ensuring safety in this new and rapidly evolving area held on the 7th December 2017 in central London.


Slides are now available from the 1-day tutorial "An introduction to model-based safety assessment and engineering"

Seminar: Risk, Proportionality and ALARP

Slides are now available from the seminar Risk, Proportionality and ALARP: How do we do enough for safety? held on 15th June 2017 in London.  

SCSC Seminar: New Thinking in Human Factors for Safety

Presentation slides from this event which looked at some of emerging topics in HF are now available. Full details on the event page.


The proceedings of the 25th Anniversary SSS are now available on the Publication page. Selected slides are also available on the event page, under Past Events.

New Challenges Seminar

Slides are now available from the event "New Challenges in Systems Safety" held on 6th December 2016 in London. See the event page.


A booking form and updated programme for the 25th Anniversary SSS is now available on the event page.

Online Bookings

Online bookings can now be made for upcoming SCSC events. Please see:


A provisional programme for the 25th Anniversary SSS is now available on the event page.

SCSC 25th Anniversary and Forthcoming Changes

May 2016 marks the 25th anniversary of the SCSC ... [read more]
25 Years of System Safety the SCSC newsletter ... [read more]
The operation of the SCSC is going to undergo a major change ... [read more]
Impact on data protection ... [read more]

Safety Arguments Seminar

Slides from the seminar "Safety Arguments: the Good, the Bad and the Ugly" are now available. See the event page.

Field Data Seminar

Slides from the seminar "Use of Service History and Field Data in Support of Safety Justifications" are now available. See the event page.

New Members Appointed to Steering Group

New members have been appointed to the SCSC Steering Group. These are:

Tim Kelly

Tim Kelly is Professor of High Integrity Systems within the Department of Computer Science at the University of York.  He is perhaps best known for his work on system and software safety case development, particularly his work on refining and extending the Goal Structuring Notation (GSN).  His research interests include safety case management, software safety analysis and justification, software architecture safety, certification of adaptive and learning systems, and the dependability of “Systems of Systems”. He has supervised many research projects in these areas with funding and support from the European Union, Airbus, BAE SYSTEMS, Data Systems and Solutions, DTI, EPSRC, ERA Technology, Ministry of Defence, QinetiQ and Rolls-Royce.

Katrina Attwood (Newsletter Editor)

After a stint as a lecturer in Old Norse, Anglo-Saxon and Medieval Literature at the University of Newcastle-upon-Tyne, Katrina took an MSc in Computer Science at the University of York. She has worked in the High-Integrity Systems Engineering Group at York since 2002, initially as a researcher and more recently as a lecturer in System Safety Engineering. Katrina's primary research interests include requirements engineering processes and techniques for embedded real-time systems, assurance argumentation, and the application of techniques from linguistics (including NLP) to software engineering. She has worked extensively with industry, particularly in the aerospace domain, on the development and application of pragmatic, semi-automated techniques to achieve consistency in the expression of requirements and assurance arguments. In addition to her work on the SCSC Newsletter, Katrina is the editor of the GSN Community Standard.

Roger Rivett

Roger Rivett is the Functional Safety Technical Specialist at Jaguar Land Rover, responsible for embedding functional safety processes and practices within the company. He has worked in the automotive industry for over 30 years on real-time software for embedded-systems fulfilling a number of different roles from software developer to Software Quality Manager.
He has been an active member of MISRA since its inception and has co-authored a number of its publications. He is currently the chairman of MISRA.  He is a member of the ISO working group that has produced the automotive functional safety standard ISO 26262.  He is a Charted Engineer and a member of the IET. He has an MSc in Software Engineering from Oxford University and is currently studying for an Engineering Doctorate at York University

Phil Williams


Phil Williams is an independent system safety consultant having started his own consultancy in 2013 after 27 years with General Dynamics UK, where he held the role of Chief Safety Authority. He has supported a number of cross-industry system safety initiatives and has represented UK defence industry on the MOD’s Safety Standards Review Committee and been a core member of the Def Stan 00-56 Issue 5/6 and Def Stan 00-55 Issue 3 authoring teams.

He is a Charted Engineer and a Fellow of the IET. He has an MSc in Safety Critical Systems Engineering from University of York.

Phil may be contacted at






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SCSC 06-03-2018 [V4e]