Hi Kezza
As stated above you can continue to trade whilst in an IVA as this is your source of income. Presumably you are talking about a business as a sole trader - self employed? It would not affect a limited company as this is a separate legal entity.
If self employed and you owe any of your suppliers money then they will be creditors in the IVA and will have to be notified as such so this could have an affect on your ability to trade if your suppliers do not support you. In my experience most suppliers will support an IVA as the benefit of having an ongoing customer will outweigh any loss they have made.
However, you should seek advice from an insolvency practitioner who can go through the details with you and provide you with advice to suit your individual circumstances. Most practitioners will give initial advice for free so you will not be committed to an IVA until you have actually signed up for it.
Hope this helps
AccumaGroup
http://www.accumagroup.com - One of the UKs leading debt and insolvency advice firms with over 200 employees.