Hi @MWJONES
You can't directly have two accounts under one setup, although you may want to have a look at Affinity
Affinity is primarily aimed at accountants and those with multiple accounts. There is a charge (calculated daily, billed monthly) and is calculated based on the account sizes.
Affinity does come with some free credit, so you could set it up, have a look, and if you don't like it, you can revert back.
These articles may of use to you:
http://community.quickfile.co.uk/c/knowledgebase/affinity
I hope that helps