Common sense would need to prevail here. Toddlers and kids under the age of about 10, understandable (I was 8 when I passed my cycling proficiency test at school enabling me to cycle on roads - admittedly there was less traffic in the late 70's), however it should be enforced for reckless...
As we must not be prejudice, some Highway Code for hard of thinking cyclists:
Rule 60: At night your cycle MUST have white front and red rear lights lit. It MUST also be fitted with a red rear reflector (and amber pedal reflectors, if manufactured after 1/10/85). White front reflectors and...