The vast majority of chauffeurs will be fully uniformed, however there are some vehicles that have a lower headroom and it is impossible to drive and get in and out of the car wearing a hat so a few chauffeurs have decided that a smart suit without a hat can look just as presentable, in fact some clients feel more comfortable with this.  In event of  excessive temperatures the chauffeur may [understandably] need to remove their jacket, especially if the vehicle does not have air conditioning.

As a guide we have listed the chauffeurs attire for each vehicle on the relevant vehicle's page under the "Feature" section. Some chauffeurs even wear period dress to match the classic or vintage era of the vehicle and this makes for wonderful photo opportunities.