The rebrand will also see the group's digital arm Euro RSCG 4D Digital rebrand to EHS 4D Digital and data specialists EHS Brann Discovery will now be known as EHS 4D Discovery.
The group said the new name was chosen to combine the heritage of the EHS business with '4D', which represents the group's close ties with parent Euro RSCG and its aim to create stronger links with the network's worldwide offices.
Mike Spicer, managing director of EHS 4D Group, added: "This change of name comes after a raft of positive news for our business and is designed to better communicate our proposition in the market and the global scope of our organisation.
"We feel that there is true value in heralding our role in an international network for clients and this isn't a link that we have forged directly before."
Separately, the group has promoted Tash Whitmey, managing partner of EHD 4D, to the newly created role of managing director of EHD 4D in London.
Whitmey’s appointment follows the promotion of David Williams as managing director of EHS Brann Cirencester, replacing Alison Hamer, earlier this month.