Nanny for 2 children, London

Hello, we are looking for a Greek-speaking nanny to collect our children (8 & 5 years old) from their school in Chelsea every Monday & Wednesday at 3 PM, bring them to our home in NW10 by prepaid cab and look after them for a couple of hours. We are hoping to find a person with a warm, caring personality and references. The job itself is not difficult, but you need to be reliable to collect on time, and be aware of safety issues (traffic, seatbelts etc). Our children are very friendly and speak fluent Greek & English. Thank you.