Oliver Mackman is Operations & Marketing Director at Muswell Rose, a role he has held since April 2025, and a director of Best Business Loans Ltd (16833937), which runs several of the group's sites. He is the group's builder: he picks up new technology quickly, builds the software and systems the group runs on, writes for its sites and runs its marketing.
He started in e-commerce in 2020, learning paid advertising, fulfilment and customer acquisition at speed. That led to social media management, then property, then talent management. In March 2022 he founded GLT MGMT, a talent management company, and built the systems that let rival agencies work together: a platform for hiring freelancers, and a marketplace for buying and selling client contracts. He sold GLT MGMT's roster and brand to a larger group in October 2023.
From June 2023 to January 2026 he worked with Air Charter Service, a private aviation business, modernising its operations: internal communications, client relationship management and booking systems for a high-net-worth client base.
Alongside his work for the group, he builds tools and technology products of his own.
Within the group he builds tools and systems, runs marketing, and writes a lot of what the group publishes. He is the named author, editor or reviewer on several of its sites, from business finance to baby names data, and wrote two books: The UK Invoice Finance Handbook and The UK Card Payments Handbook. Where he reviews a page on a site that Best Business Loans Ltd owns, the page says so.
He holds the CIM Level 6 Diploma in Professional & Digital Marketing (November 2025) and the CIM Level 4 Certificate in Professional & Digital Marketing (October 2023) from the Chartered Institute of Marketing, and studied digital marketing at Cambridge Marketing College (Level 3, 2020 to 2022).
By the numbers
- CIM Level 6 Diploma in Professional & Digital Marketing (Nov 2025)
- Founded GLT MGMT, March 2022; roster and brand sold October 2023
- Air Charter Service, June 2023 to January 2026
- Director, Best Business Loans Ltd (16833937), since November 2025
Where his work appears
Named author, editor or reviewer on several of the group’s sites.
BabyData: editor · MarketInvoice: author of The UK Invoice Finance Handbook, and reviewer · MerchantHQ: author of The UK Card Payments Handbook, and reviewer · FundBiz: reviewer
What he works on
Oliver’s work across the group, and the record behind each area.
Software and systems
Builds the tools, websites and systems behind the group’s products. Before the group, built a freelancer-hiring platform and a client-contract marketplace for the agency world at GLT MGMT, and modernised booking and client systems at Air Charter Service.
Writing
Named author, editor or reviewer across the group’s sites, from business finance to baby names data. Author of The UK Invoice Finance Handbook and The UK Card Payments Handbook. On FundBiz and MerchantHQ, where he is a director of the operating company, the reviewed pages say so.
Marketing
CIM Level 6 Diploma in Professional & Digital Marketing (November 2025) and CIM Level 4 Certificate in Professional & Digital Marketing (October 2023), with earlier study at Cambridge Marketing College (Level 3). Paid advertising and customer acquisition since 2020.
Operations
Air Charter Service, June 2023 to January 2026: internal communications, client relationship management and booking systems for a high-net-worth client base. GLT MGMT, March 2022 to October 2023: founded, built and sold.
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 group, 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
Tools and technology
Building tools and technology products of his own, alongside his work for the group.
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
Find Oliver