Urban planters is a London based company that source, install and maintain plants and flower pots in home and office locations. They tend to focus their business on the corporate clients simply because they are who has the money to buy and not the time maintain.
Much like any other plant maintenance company they work with designers to find the right pots for the right environment and then do the logistics of getting them in. The pots can either be bought or rented depending on the clients desires.
As one of the biggest in the business they can get a huge number of pots and plants and know their game like the back of their hands. The images below are from their site and just go to show the effect their team can make. I’ve also put some of my own pots in there for comparison.