Pension Credit and Self-employment?

I finally gave up work several months ago and now receive a partial State Pension, Pension Credit Guarantee and Housing Benefit.

I now feel that I've holidayed for long enough, and am considering entering self-employment later this year, depending on how some trials I make go.

However, I cannot get an answer from anyone re Pension Credit, any profit I might make from my prospective business and their relationship.

I am referred by Pension Credit to 'the taxman' and HMRC told me to ask the DWP - talk about going round in circles!

Anyone got any experience of this? Or can suggest where I might find information on it?