Spatial computing and augmented reality have moved far beyond novelty filters into high-ROI commercial tools for British retail, property, manufacturing, and healthcare organisations. At 360 Web Coders in Wallington, Surrey, our AR/VR App Development studio builds photorealistic 3D mobile augmented reality and standalone virtual reality simulations. For consumer eCommerce and architecture brands, we engineer LiDAR room-scanning and interactive "Try Before You Buy" product visualisers using Apple ARKit, RealityKit, Google ARCore, and browser-based WebXR. For enterprise staff training, safety simulations, and virtual showrooms, we develop high-frame-rate 6DoF experiences in Unity 3D and Unreal Engine deployed to Meta Quest 3, Apple Vision Pro (visionOS), and HTC Vive headsets with full offline asset caching and UK GDPR compliance.