Can some one help with this

I passed my rigid 8 months ago all the firms round here pay around £8ph I’m on 7.59 :open_mouth: then I get my holiday on top which takes it up to 8.40. I have now gone ltd and still work for the employer ad-hoc and agency, there giving me 9-10 then 11.50-12.50 after 8 but one company does not ring much but the other has me in supermarket delivery and I have an assessment with a tipper firm but I want to stay with the agency as the firm direct only pays 8.56 an hour. I don’t like all this multi drop work and I have been looking at hgv 1 jobs and some are paying £16ph I think through agency’s. I can only work Monday to Thursday due to other commitments. If i take my class 1 is there more work and can I ask for up to £20ph being freelance covering holidays and short notice jobs, which areas have the best work I’m told from Heathrow to dartford on the m25.
Not sure if I should go for the class 1 that sort of money sound good would really help with the rigid work it seems like lots of work for low pay.