The teams two have days to set up and host a children's party for high-spending clients.
Lord Sugar challenges the candidates to open a discount store.
Lord Sugar asks the teams to set up and run a handyman business.
The candidates have to write and design a children's book to sell to London's bookshops.
Get up to speed for the rest of the series with Matt Edmondson's mid-series round up.
The candidates try to tap into one of the UK's biggest markets - pet products.
Take a first look at the candidates trying to impress Lord Sugar.