Personal Assistant (FTC till end of Jan 2027)

London, hybrid role – minimum 2 days per week in office with the flexibility to be onsite to cover meetings, events and colleagues when they are off.

About Us

tms unites technology, marketing, and sourcing to drive transformational change for the world’s leading brands. With 1,200+ employees across 26 countries, we offer an impressive range of solutions – from inspiration and innovation to category management and delivery. Operating as a creative agency, a strategic consultancy, a sourcing business, and a technology provider, we engage with over 110 million customers every single day for our clients, including McDonald’s, T‑Mobile, O2, Starbucks, and adidas. Most importantly, we’re a place where you can achieve great things, and be recognized as the best.

What Matters The Most

Breakthrough, business‑driving ideas come from extraordinary people with the freedom to be their most authentic selves at work. Authenticity and diversity are critical elements of our business. They can only be realized when we create access and equity for all. We foster a culture of inclusion and belonging and aspire to be ever‑evolving. tms is a place where brilliant people are better together. If you want your ideas to be heard and to contribute to a culture of inclusion and authenticity, bring us your voice!

At tms we believe that from day one our job is to prepare you, develop you, train you and invest in you so that while with us you will become ready to take on the next challenge better prepared than you thought possible. So whether you’re here for a meeting, a project, or a career – be prepared to Leave Changed.

Why We Think You Will Love This Role

We are seeking a Personal Assistant to join the heart of our operations, supporting Senior Leaders. Every day brings variety – whether you’re planning global meetings, organising travel, or making sure events run smoothly. You’ll collaborate with teams across the world and be the person everyone relies on to keep things moving. If you love being organised, enjoy connecting with people, and want a role where no two days are the same, you’ll feel right at home here.

Key Responsibilities

• Diary & Meeting Management
  • Diary management for 3 Senior Leaders across UK Client Services, Global Happy Meal and Global Supply Chain.
  • Organising team wide internal and external meetings – liaising with PA’s from tms Chicago and clients – often across different time zones.
  • Managing diary clashes and late, on the day, diary changes.
  • Scheduling weekly direct report meetings.
  • Book meeting rooms, arrange refreshments, stationery and IT equipment ahead of time.
• Travel & Logistics
  • Booking all leaders and their teams business travel via our travel agent.
  • Checking necessary visas.
  • Working with relevant overseas PA’s to help organise travel for colleagues to the UK, booking hotels, restaurants and entertainment, as required.
  • As part of the coordination team, supporting anyone in the London Office who needs travel arrangements or restaurant bookings.
• Expenses & Approvals
  • Approving each leaders teams’ holiday requests and expenses, as well as keeping track of leaders holiday for the year and processing their expenses via company systems.
  • Assistance with payments using a company card for people in the London Office.
  • Processing credit card expenses and raising and approving purchase orders where needed.
  • Process our Campaign Assistant’s business expenses who work at the client’s office.
• Event & Office Coordination
  • Organisation of team wide events, planning of daytime meetings and evening entertainment, booking venues and, where necessary, attending to ensure smooth running.
  • Liaising with McD’s or various external companies that use our office as an event space.
  • Having control of the event from answering queries, organising guest lists, informing security, ensuring correct set up, arranging refreshments, informing the rest of the office and being onsite for the day to support.
  • As one of a team, organise and host internal monthly social events to bring the agency together.
  • Organising breakfast and lunches for external meetings in the office.
  • Setting up and clearing down.
  • Booking external meeting rooms where needed if the office is fully booked.
• General Administration
  • Completion of weekly timesheets, as needed.
  • General adhoc admin support covering colleague’s responsibilities when necessary.
  • Support for the London office with meeting room allocation, moving people where necessary and keeping track of who is in.
  • Welcoming external visitors to the office, when needed.
  • Keeping track of who is attending our office from overseas.

Skills And Experience We Would Like You To Have

• Proven experience as a Personal Assistant or Executive Assistant supporting senior leaders.
• Strong organisational and time‑management skills with the ability to manage multiple diaries and priorities.
• Excellent communication skills, both written and verbal, with confidence liaising across different time zones.
• Proficiency in Microsoft Office (Outlook, Word, Excel, PowerPoint) and familiarity with expense and travel booking systems.
• Ability to handle confidential information with discretion and professionalism.
• Experience coordinating meetings, events, and travel arrangements, including international logistics.
• Comfortable working in a fast‑paced environment and adapting to last‑minute changes.
• Strong attention to detail and accuracy in managing approvals, expenses, and documentation.
• A proactive, problem‑solving mindset and ability to work independently as well as part of a team.
• Previous experience in a creative or client‑focused environment is desirable but not essential.
• Flexibility to work in the office more than two days some weeks dependant on business requirements.

If you have any questions about the job, we are open to discussing this role further, so please feel free to get in touch.