The move is a U-turn for Interpublic, which had angrily issued a statement in January saying that all members of Lowe staff who were defecting would be held to the letter of their contracts.
Originally on a 12-month contract, Weinberger was given only a weekend's notice that he could join the new agency, which now numbers 36 staff. He was told on Friday that he was being released from his contract, and started at The Red Brick Road yesterday.
Weinberger's decision to leave Lowe and join Sir Frank is believed to have been one of the major factors in Tesco's decision to move its £45m account into The Red Brick Road. The account has been with the new agency since March 6.
The news comes as Interpublic outlined plans to close more than half of Lowe's offices to focus on core markets. It is to slash the number of offices from 83 to 36.
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