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 contact Chris Bond on 020 75056816 Syphonic-drainage specialist Fullflow recently designed, manufactured and installed a syphonic-drainage system for the Qube, London. The syphonic action enables rainwater to be drained at high velocity and volume, requiring up to 80 per cent fewer downpipes than a traditional gravity system.