Newbie with Class C, C+E and ADR

Hi, Just after a good bit of advice. Just passed my class C, C+ E as well as all my adr except explosives and nuclear. Is there a need or job opportunities for doing either the nuclear or explosive adr course and is the pay better? If not what’s the best way to get into the petrol tanker side of driving as I know it’s hard to get into without experience. I live in East Sussex and willing to travel in the Hampshire, West Sussex, Kent, Surrey and London. Further afield if I have to.