Please help us buy a house

We are a family with a child and we want to buy a house. We live in London and the rent is too expensive. Sometimes our son is asking for more expensive toys or for holidays but we can not afford all this things because all the money are going on rent, bills and food. We was thinking to buy a house, in this way, we will not make other people rich from the rent we pay each month, and we will be able to offer to our son a decent life. We don't have enough money for buying a house and will take ages to raise the rest of the money on our own. We will really appreciate every little help. Thank you in advance for your help! God bless you all!