Just took a look at the syllabus, cause I did OCR
Vectors - the stuff on M1 for vectors is really really simple, it's essentially nothing more than adding and subtracting
Kinematics - (v,t) graphs and suvat essentially, you'll have covered most of this in GCSE physics? if not, it's also pretty simple
Statics - Resolving and resultant forces, friction and equilibria will probably be a new concept to you. It's fairly intuitive, so you could definitely teach it yourself.
Moments - Easy as pea
Dynamics - F=ma, pulleys and momentum, you'll probably have done some of this in GCSE physics too? Again, should be fine.
Overall, I'd say you could definitely teach it to yourself with a good textbook/private tutor, whatever way suited you. M1 is a new branch of maths to you, so most the stuff on it is fairly straightforward.