The seventies departed from the principle that just about everything in contemporary society would need to be renegotiated. From the reverberating calls for women’s rights to the rumblings of Thatcherism, it was an era in which change was not only expected, but earnestly demanded. No object was free from this reforming tide. Fusty three-piece suites were replaced with snaking modular sofas that could be rearranged at will. Louche lines, soft edges and platform bases made way for a wonderfully luxurious experience. The lounge, in all its cushy glory, was born.