Science from primary to secondary school level online from a qualified tutor

Details

I will increase my rates monthly by only 5p--15p every quarter year. Depending on skill level (i.e., Chess.com Elo), here is the pricing list (for now:£/hr)
KS1=4
KS2=6
KS3=8
KS4=10
Since the amount you will pay will be different depending on size, here's a guide to my rate multipliers
1-to-1=1.2
1-to-2=1.1
small group (3--9)=1
large group (10--19)=0.75
class-size (20--39)=0.5
lecture-size (40+)=0.25