Although many firms believe large, open-plan workspaces help collaboration, in fact, unless staff are in close proximity 'you might as well be in Belgium', said Millard. However research has shown that put workers too close together and they clam up, as if being stuck in a lift together.
"The trouble with open-plan offices is they are a one-size-fits-all model which actually fits nobody," Millard said at New Scientist Live in London yesterday.
"We're interrupted every three minutes. It takes us between eight and 20 minutes to get back into that thought process. Email. We get too much. Meetings, colleagues. It's all distracting.
"Is being switched on making us more productive? The answer is no. The problem of the future is switching off. The big damage is task-switching. You can tell you have been task switching when you switch off your computer at night and find there several unclosed windows or unsent emails still there because you were interrupted.
"So we will become shoulder bag workers. Our technology has shrunk so we can literally get our office in a small bag. We are untethered, we don't have to have a desk anymore."
However Millard said that offices are still important, if only for socialising.
"We need a balance between we and me," she added. "We need to give people options of how they can work, such as home working.
"But I do go a tiny bit nuts if I am just at home, so I think we will start to embrace 'the coffice' I need good coffee, connectivity, cake, my wifi wings to fly me into the cloud. I like company. The 'coffice' could be a coffee shop or a hotel lobby."
Millard said the ageing workforce will also change how offices work, because older people will no longer want to work nine to five or commute for long distances.
"We have an older workforce, which is fantastic because they have accumulated experience gained over many years but they are probably not going to work nine to five, or commute into work. In fact, I can't remember the last time I worked from nine to five."
She also said that it was unlikely the robots would take most jobs.
"A lot of these technology won't replace us they will help us to the dirty, dull and dangerous jobs that we don't want to do. It's very difficult for robots to replicate humans. They don't have the dexterity, the empathy, the gut feelings.
"I think the rise of the droids is a positive trend and can make us feel more valuable as human beings."