looking for a host family and job

Hello, my name is Paul Belin, I’m french and I’m 17.
I’m the oldest child in my family (4 children) and I like sport (rugby) and scouting.
I need to stay 2 or 3 weeks in july in England to improve my English.
Therefore, I’d like find a summer job in England. Reliable, I’m able to take care of kids, or to help in a family, home gardening, barman…

If you know someone who could help me, please contact me :
[email protected]
Thank you very much !