It has made Davies redundant after nearly five years with the company.
The move comes as the FTSE 100 insurer tries to rebuild its reputation with the City following the debacle over its surprise rights issue last year.
Davies, who could not be reached for comment, joined Prudential in 2000 from Lloyds TSB where she had been director of corporate comms.
Davies and Burrows were both in the running for the Prudential comms director role, which merges their former posts. Burrows now oversees all group comms, including investor, analyst and media relations, public affairs and internal comms.
Davies’ Prudential tenure included the failed merger bid with US insurer American General, and CEO Jonathan Bloomer’s poorly received announcement last year that the firm would tap shareholders for £1bn.
Burrows was previously Norwich Union IR and corporate comms director; she joined Prudential six months before Davies.
Burrows said the media and City’s poor reception of Prudential’s rights issue had been a factor in Bloomer’s decision to combine corporate communications and IR into a 25-strong team.
But she insisted there would be no change to the relationship with retained financial adviser Brunswick.