The planned £2bn redevelopment of one of Europe's largest inner city sites threatens its heritage, say critics.
Mr Perry wants the Victorian buildings to be saved
Once work on extending King's Cross station and creating the new Channel Tunnel Rail Link is complete, there are plans to regenerate a 67-acre site.
But campaigners say historic Victorian buildings are to be bulldozed to make way for office blocks and new spaces.
Developers Argent say its plans, due to go before Camden Council in March, will respect the heritage of King's Cross.
The redevelopment, on the former King's Cross "railway lands", is due to begin once the station is complete next year.
'The urban wall'
The developers plan to bring new homes, new squares and new jobs to the area.
But campaigners say removing Victorian structures, like the Northern Stanley and Culross buildings, is wrong and will destroy too much of the area's heritage.
Rupert Perry, of the King's Cross Conservation Area Advisory Committee said: "What we should do is have a heritage-led regeneration of this area.
The Gas Holder frames are to be revamped
"That way they can enhance the value and also make it more interesting for normal people who live and work in this area."
Some fear the southern end of the site will be dominated by office blocks, they have already nicknamed it "the urban wall".
But the developers say their plans respect heritage and will see new uses for more than 20 historic buildings and structures, including the listed Gas Holder frames.
Roger Madelin, from Argent, told the BBC: "There's a large amount of workspace but that's not just in offices - it's in shops, in education, in restaurants as well."