No, as its not mandatory in the minicabs. However, should you require one do let us know in the booking form and we will try our best but its not guranteed.
Most airlines will allow you to use your own child seat on board their aircraft
In most cases, the following criteria will apply
An infant is a child less than two years old. (Children aged 2 and over are not permitted to use an Infant car seat onboard)
If you would like to use your own car seat, it must:

• Be designed to be secured by means of a normal aircraft single lap strap 
• Have a separate 5-point restraining harness 
• Not exceed the dimensions of the aircraft seat, and should fit into an area of 43cm x 43cm (17.ins x 17ins) 
• Must be secured to its host seat at all times of the flight 
• Must not require the use of a three-point harness to secure it to the aircraft seat.
• Rear facing car seats are not allowed
• If for any reason your car seat cannot be fully secured, it may have to be placed in the hold. In these circumstances, your infant will have to be secured to your lap whenever the seat belt sign comes on

As is the case with pushchairs, child car seats are classed by airlines as essential extras, so If the airline will not let you use your child seat during the flight, they will generally allow it to be carried in the hold with no extra charge.

* We would always advise passengers to check with the airline whilst making your booking.