We have a little mould in our bedroom and bathroom. Feels like I should urgently deal with it - we have a toddler, baby on the way and I have asthma. But - you know - a million things on the to do list means I probably won't get around to it for a year at least.
Have you done/ would you do one of the tests you can order online? Prices go from a few pounds to over £200.
Would you trust a local trader to be honest if it's not harmful, given the amount of work they would generate if we have to replaster/ seal/ whatever??