Respond to these showcases www. ajplus. co. uk/ajdirect Readers may obtain information about these products by filling in the enquiry numbers on an AJ enquiry card. Advertisers wishing to promote their products on these pages should Formpave's Aquafl ow permeable paving has been used in Bristol's Home Zone project. One-level paving uses colours and textures to indicate specific areas, with rain passing through the concrete blocks into a stone sub-base for controlled release into the sewers.