< Back to search
Mars UK • Castle Cary, Somerset, United Kingdom

Demand Planner

Salary:  £31,900 – £35,900 per annum

Job Description

Job Description:

Demand Planner

  • Castle Cary

  • Salary: £31,900– £35,900 dependent on experience

  • Company performance bonus

  • Hours: Mon-Fri

  • Permanent

Job Purpose

Working with the senior demand planner to help deliver an accurate forecast for 700 products across,14 sales channels and 2 territories in collaboration with Sales, Marketing and other stakeholders. Improving predictability of our sales volumes, you’ll positively impact the customers service levels and support inventory optimisation.

What are we looking for?

  • 2+ years supply chain experience (either demand or supply planning)

  • Previous experience of planning systems such as (e.g. FuturMaster, SAP)

  • Excellent analytical skills coupled with a continuous improvement mindset to drive efficiency and process enhancements.

  • Stakeholder management experience, including the ability to build strong cross-department relationships, supported by robust interpersonal and influencing skills.

  • Aptitude for working with data systems and analytics tools such as Power BI

What would be your key responsibilities?

  • Collaborate with the Demand function to co-create accurate and aligned volume demand plans for specific segments and customers, covering short, medium, and long-term horizons

  • Facilitate periodic demand reviews with each key account manager during forecast alignment meetings, ensuring alignment on demand communicated to the entire local business through the S&OP process

  • Maintain & ensure excellent data quality in planning systems; managing product launches, delists and route to market changes in planning system.

  • Track forecast accuracy; measuring and reporting on SFA / BIAS, identifying root cause of deviations and implementing corrective or preventative action

  • Identify potential improvements and automate or streamline manual processes to reduce cycle time.

What can you expect from Mars?

  • Work with over 130,000 diverse and talented Associates, all guided by The Five Principles.

  • Join a purpose driven company, where we're striving to build the world we want tomorrow, today

  • Best-in-class learning and development support from day one, including access to our in-house Mars University.

  • An industry competitive salary and benefits package, including company bonus.

About Mars

Mars is a family-owned business with more than $35 billion in global sales. We produce some of the world’s best-loved brands: M&M’s®, SNICKERS®, TWIX®, MILKY WAY®, DOVE®, PEDIGREE®, ROYAL CANIN®, WHISKAS®, EXTRA®, ORBIT®, 5™, SKITTLES®, BEN’S ORIGINAL® and COCOAVIA®. Alongside our consumer brands, we proudly take care of half of the world’s pets through our nutrition, health and services businesses such as Banfield Pet Hospitals™, BluePearl®, Linnaeus, AniCura, VCA™ and Pet Partners™. Headquartered in McLean, VA, Mars operates in more than 80 countries. The Mars Five Principles – Quality, Responsibility, Mutuality, Efficiency and Freedom – inspire our 130,000 Associates into taking action every day towards creating the world we want tomorrow.

Mars is an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability status, protected veteran status, or any other characteristic protected by law. If you need assistance or an accommodation during the application process because of a disability, it is available upon request. The company is pleased to provide such assistance, and no applicant will be penalized as a result of such a request.

Working at Mars UK

Hybrid

Core hours 11–3

Company employees:

4,000 In the UK

Gender diversity (m:f):

57:43

Hiring in countries

Australia

Austria

Belgium

Brazil

Canada

Chile

China

Czechia

Egypt

Estonia

France

Germany

Hungary

India

Italy

Japan

Kazakhstan

Kenya

Latvia

Lithuania

Malaysia

Mexico

Netherlands

New Zealand

Poland

Romania

Russia

Saudi Arabia

Singapore

South Africa

South Korea

Spain

Switzerland

Thailand

Türkiye

Ukraine

United Arab Emirates

United Kingdom

United States

Office Locations

Company benefits

Open to part-time employees
Open to job sharing
Open to compressed hours
Sabbaticals
Enhanced maternity leave – 26 weeks at 90% pay
Enhanced paternity leave – 26 weeks at 90% pay
24 days annual leave + bank holidays
“Pawternity” leave
Pregnancy loss leave
Bank holiday swaps
Shared parental leave
Adoption leave
Family health insurance
Pregnancy support
Neonatal leave
Faith rooms
Meditation space
Dog friendly office
Dog friendly co-working space
Annual bonus
Employee discounts
Cinema discounts
Referral bonus
Joining bonus
Cycle to work scheme
Electric Car Salary Sacrifice
Enhanced pension match/contribution
Theme park discounts
Lunch and learns
In house training
Learning license
Studying sabbaticals
Open to part time work for some roles
Menopause support
On-site gym
On-site barista
Secure on-site parking
On-site catering
Private booths
On-site wellness room
Collaboration spaces

Awards & Accreditations

1st - Most Family Friendly Company

1st - Most Family Friendly Company

Flexa awards 2026
3rd - Best Workplace Benefits

3rd - Best Workplace Benefits

Flexa awards 2026
Most loved - Large companies

Top 5 - Most loved - Large companies

Flexa awards 2026
Best Work-Life Balance

Top 10 - Best Work-Life Balance

Flexa awards 2026
1st - Most Family Friendly Company

1st - Most Family Friendly Company

Flexa awards 2025
2nd – Pet Friendly

2nd – Pet Friendly

Flexa awards 2025
Most Flexible Company

Top 5 - Most Flexible Company

Flexa awards 2025
Most Inclusive Company

Top 5 - Most Inclusive Company

Flexa awards 2025
Best Work-Life Balance

Top 10 - Best Work-Life Balance

Flexa awards 2025
Best Career Progression

Top 10 - Best Career Progression

Flexa awards 2025
Best Workplace Culture

Best Workplace Culture

Flexa awards 2025
Best Workplace Benefits

Best Workplace Benefits

Flexa awards 2025
1st – Large companies

1st – Large companies

Flexa100 2024
Consumer Goods

Consumer Goods

Industry awards 2023
3rd – Large companies

3rd – Large companies

Flexa100 2023
Retail & Ecommerce

Retail & Ecommerce

Industry awards 2022