I've put that caveat in the title of this post, because I think it's important to remember that sugar is sugar, be it naturally occurring in fruit or refined. And in concentrated forms even fruit sugar should be limited. However, if you're in desperate need of something sweet and chewy, 'La Fruit', made by Lyme Regis foods and available from Waitrose and Holland and Barrett might be just the ticket.
They are available in a range of flavours; I've tried raspberry and blackberry. I think they also make them in apricot flavour. They are based - like a lot of these kind of products - on apple and pear puree and have no added sugar or sweeteners. In appearance, they're more like those blackcurrant glycerine throat sweets you get from the chemists than fruit pastilles, but they're very fruity and just the right texture.