Part time after school nanny needed

I am looking for evening and weekend nanny/babysitter position for my son. This is for after-school hours till bedtime during the week (any 2 days Tue to Fri) and 3-4 hours on Sundays. He is 6 years old, has autism and currently does not speak. Prior experience with children with autism will be great. We live in SE26 6GA. If interested, please contact me at shveta.m.jindal@gmail.com.