How do I add another company to my account and how much would this cost. Thank you

Hello Pmhgasandelectri, 

Welcome to the Community page, 

So if you click on this link here, you can sign up to one of our products, all you need to do is sign up with the same email address then you will be bale to switch between the two companies. So if you where to get the simple start account it would be £12 per month +VAT, Essentails would be £22 per month +VAT and the Plus account would be £32 per month +VAT. 

@pmhgasandelectri 

One QBO account is for one company file. You can manage branches/divisions by utilizing the Class/Location feature available in QBO Plus. You can open a new account with the same email address.

https://quickbooks.grsm.io/UK