The new Manchester office of Birmingham-based HBJ Gateley Wareing will be led by real estate partner Rod Waldie.
Last month HBJ Gateley Wareing acquired 40 partners from collapsed law firm Halliwells and occupied its former Manchester office at 3 Hardman Square in Spinningfields.
HBJ Wareing took on an additional 200 staff in employment, intellectual property, construction, corporate, pensions and the corporate recovery divisions.
The law firm now has 140 partners and increased its staff to 750.
As well as Manchester, HBJ Wareing also has offices in London, Edinburgh, Leicester, and Nottingham, plus an office in Dubai.