AATi Limited was formed in 1984 and adopted the traditional London Underground antislip cast metal stair tread designs which have been an ever present and effective feature on the UK rail network for over 5 decades. They have designed and developed their product range to embrace the DDA (Disability Discrimination Act) requirements, also now focusing on uses outside the traditional markets; light rail, over-ground, station terminals and a wide range of commercial and architectural applications. All products are designed and manufactured in the UK. their stair nosings offer a very cost effective solution with unrivalled performance when taking into account ‘whole of life’ costs. Using the London rail networks as the best example, with footfalls exceeding 148 million users per annum at Liverpool Street Station and their products being installed well over 20 years ago but they are still functioning adequately despite these extreme conditions.