IT Lab has been renamed as Content+Cloud as the businesses it has acquired over recent years are brought together.
The IT Lab brand will be retired on 1 September along with the Content and Code name, which joined the group via acquisition in 2018.
Sol-Tec, which was acquired this year, will also be renamed "in due course", CEO Peter Sweetbaum said.
In a video the chief exec said the name better reflects the services that the group provides.
"There are a number of reasons for this, but most importantly it brings together all the capabilities and services in the IT Lab group into a single organisation - which enables us to bring the full power of what we can do to one company and one brand.
"We believe by doing this we deliver on our own missions, which is to help ambitious people and organisations to succeed."
Sweetbaum added that two brands - Mirus IT and Persective Risk - will retain their own brands.
Mirus is an MSP focused on the SMB market, while Perspective Risk is a security and penetration testing specialist.
The group said its sales were taken to £75m annually when it announced the acquisition of Mirus last year.
IT Lab is the second large IT provider to announce a name change recently, with SBL set to become Boxxie at the start of September.
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