When setting up your company on 1Centre the 2nd tab Account rules allows you to define / tailor the trade account application according to your requirements. 

In this section you can;

1. Switch on credit checks, ID checks, guarantors and trade reference checks ( + add any excluded trade referees eg credit card issuers, landlords etc). 
2. Add any additional questions - it is possible to add up to six questions
3. Define how many approvers a trade account application need eg 1 or 2 people