Car tax

Is this still relevant

"You can apply for exemption from paying vehicle tax if you get the: higher rate mobility component of Disability Living Allowance ( DLA ) enhanced rate mobility component of Personal Independence Payment ( PIP ) enhanced rate mobility component of Adult Disability Payment ( ADP ) or 50% reduction in car tax for the standard rate mobility component?

I am considering changing my car from Motability to PCP finance since it actually works out to be cheaper and the long term modifications I need for my condition can stay on the car, rather than surrendering the car after 3-5 years each time.