Consultant Profile

Nigel Marriott

Areas of Consultancy:
Censuses and surveys
Exploratory data analysis
Multivariate analysis
Quality methodology
Statistical inference
Time series

Region of consultancy:


I am an independent consulting statistician & data scientist based in Bath, England with a global client base. I have over 30 years’ experience of using statistical thinking and methods to solve business challenges around the world. To date, I have worked with over 150 clients from many industries in the public and private sector. The breadth of my experience is highly unusual in any profession but particularly for a statistician, who tend to specialise in particular fields. I have worked with teams in research, purchasing, finance, HR, trading desks, sales, marketing, product design, IT, recruitment, engineering, manufacturing, quality & scientific fields. My background and experience means that I am especially strong at communicating complex statistical ideas in a language that can be easily understood by non-statisticians thus making it easier for you to take actions on the outputs of my work. In most cases, I am happy to work on a fixed price basis. This means that you will know in advance how much my services will cost before you engage me. For more details, please contact me using the information given on the Contact Details tab where you will also find my website and LinkedIn profile.


MARRIOTT STATISTICAL CONSULTING LTD I founded my consultancy business in 2006 and am based in Bath but with clients throughout the UK and the world. I am an independent consultant & sole owner of my business. I have worked in partnership with many organisations on client projects. For more information, please visit my website shown on the Contact Details tab. MY CAREER Please visit my LinkedIn profile for more details. 1997-2006, Mars Inc, Slough, UK (3 roles) - Senior R&D Statistician, Senior Market Analyst, Commodity Economist 1991-1997 ED&F Man Cocoa Ltd, London, UK (3 roles) - Crop Forecaster, Quant Analyst, OR Analyst MY QUALIFICATIONS 2014 - Accredited as Professional Statistician (PStat) by American Statistical Association 2003 - Accredited as Chartered Statistician (CStat) by Royal Statistical Society 1997 - MSc Applied Statistics & Operational Research, Birkbeck College, London 1991 - BSc Mathematics (Hons), University of Bath ROYAL STATISTICAL SOCIETY I am active in the society and have given a number of presentations at conferences and other meetings. I am currently a member of the Business & Industry Section and previously served as Chair of Quality Improvement Section, member of the Professional Affairs Committee and member of Diversity & Inclusion Committee.


I specialise in the following 5 areas. For more details and case studies please visit my website or my LinkedIn profile as shown on the Contact Details tab. SURVEY DESIGN Sample size calculation, questionnaire design, imputation models, acceptance sampling, decision rules, sample design, market research. DIVERSITY & PAY GAP ANALYTICS Gender Pay Gap Modelling, Ethnicity Representation Gap Analysis, Equal Pay Audits, HR Data Analysis Training, Disability Pay Gaps, Diversity and Inclusion Statistics FORECASTING & RISK MODELS Forecasts, business planning, risk analysis, decision science, trend analysis, projections STATISTICAL TRAINING COURSES Basic Stats Courses, Statistical Thinking, Identifying Trends and Making Forecasts, Multivariate Analysis, Hypothesis Testing EXPERT WITNESS & ADVICE SERVICES Expert advice, statistical expert, stats advice