Oliver Mackman holds the CIM Level 6 Diploma in Professional & Digital Marketing, awarded November 2025 by the Chartered Institute of Marketing, alongside the CIM Level 4 Certificate in Professional & Digital Marketing and further study in digital marketing at Cambridge Marketing College (Level 3).
He started in e-commerce, learning paid acquisition and fulfilment at speed, then moved through social media, property and influencer management, where he built the systems that let rival agencies collaborate: a platform for hiring freelancers to support agencies, and a marketplace for buying and selling client contracts within the industry.
From there he moved into senior consultancy and operations, including digital-transformation work for Air Charter Service, a private-aviation business, and the delicate business of managing high-net-worth client relationships. In October 2023 he sold the roster and brand of GLT MGMT, the talent management company he founded in March 2022, a first exit, while continuing to support Air Charter Service through to January 2026.
Within the Muswell Rose group, Oliver is the marketing and editorial layer. His research depth and marketing-and-operations background sit behind much of the group's editorial and acquisition work, and he reviews content across the group's titles for clarity, structure and quality of presentation. Where a subject needs vertical expertise, that comes from the group's named topic specialists; Oliver's discipline is the craft that carries it.
By the numbers
- CIM Level 6 Diploma in Professional & Digital Marketing (Nov 2025)
- CIM Level 4 Certificate in Professional & Digital Marketing
- Digital marketing, Level 3, Cambridge Marketing College
- GLT MGMT: founded March 2022, roster and brand sold October 2023
- Operations lead, Air Charter Service, June 2023 – January 2026
Expertise & evidence
What Oliver works on across the group, and the record behind each area.
Digital marketing & paid acquisition
Holds the CIM Level 6 Diploma in Professional & Digital Marketing (awarded November 2025) and the CIM Level 4 Certificate in Professional & Digital Marketing from the Chartered Institute of Marketing, with further study at Cambridge Marketing College (Level 3, digital marketing). Hands-on record in paid acquisition and performance marketing from e-commerce onwards: paid traffic, funnels, CRM and retention.
Used on: SEO Compare, where the subject is marketing itself.
E-commerce & platform building
Started in DTC e-commerce in 2020, then founded GLT MGMT, a talent management company, in March 2022, building the platforms behind the agency world he worked in: a freelancer-hiring platform for agencies and a marketplace for buying and selling client contracts. GLT MGMT’s roster and brand were sold to a larger agency in October 2023.
Operations & digital transformation
Senior consultancy and operations lead for Air Charter Service, a private-aviation business, from June 2023 to January 2026: modernising operations, internal communications, client relationship management and booking systems for a high-net-worth client base.
Editorial & research
The group's editorial review layer. Reviews credited to him across the group's titles cover clarity, structure and quality of presentation, backed by CIM-qualified marketing craft; subject-matter accuracy sits with each title's named topic specialists. On FundBiz and MerchantHQ, where he is a director of the operating company, that ownership is disclosed on the reviewed pages themselves.
Used on: FundBiz and MerchantHQ, where Oliver is the named reviewer.
The journey, year by year
2020
E-commerce beginnings
Launched into e-commerce during the first lockdown, dropshipping high-demand products (dog beds, face masks, hand sanitiser), learning paid traffic, fulfilment and customer acquisition the fast way.
2021
Social media management
Parlayed those marketing skills into managing social media for clients, which opened the door to property, managing holiday homes and Airbnbs across clients’ portfolios.
2022
Influencer management
Moved into talent management, helping influencers grow their reach and monetise their audiences through brand deals and content strategy. Built communities and systems that enabled agencies to collaborate and pool resources, including a platform for hiring freelancers to support agencies, and a marketplace for buying and selling client contracts within the industry.
2022
GLT MGMT
Founded GLT MGMT, a talent management company, in March 2022. Built the systems that let rival agencies collaborate: a platform for hiring freelancers to support agencies, and a marketplace for buying and selling client contracts within the industry.
Mid 2023
Air Charter Service
Took on a consultancy role with Air Charter Service (private aviation), from June 2023. A first real exposure to operations and business strategy at a senior level, improving client satisfaction and retention, and a first taste of high-net-worth clients and the delicate art of managing those relationships.
October 2023
GLT MGMT sold
Sold GLT MGMT's roster and brand to a larger agency, a first exit that freed him up to focus on what came next, while continuing to support Air Charter Service.
2025
Air Charter Service, to January 2026
Continued supporting Air Charter Service with digital-transformation initiatives, internal communications, client relationship management and booking systems, through to January 2026.
2026
Technology builds
Building and scaling technology products across several sectors, from operations software to customer-facing platforms.
Continuing learning
Open University (OpenLearn) short courses, each completed with a statement of participation.
- Stakeholders in marketing and finance · Accounting & Finance, Intermediate · October 2022
- Campaigns and organisations · Business Strategy & Studies, Advanced · December 2021
- Business communication: writing a SWOT analysis · Money & Business, Introductory · October 2022
- Products, services and branding · Business Strategy & Studies, Introductory · December 2021
- The concept of innovation · Leadership & Management, Intermediate · December 2021
- Developing high trust work relationships · Leadership & Management, Intermediate · October 2022
- The importance of interpersonal skills · Leadership & Management, Introductory · December 2021
- Engaging with children and young people · Leadership & Management, Introductory · October 2022