You can install our site as a web app on your iOS device by utilizing the Add to Home Screen feature in Safari. Please see this thread for more details on this.
Note: This feature may not be available in some browsers.
However it's mostly intended for professionals. For personal access I believe you have to live in an area where local rules give you a "right to repair", for example in the state of Massachusetts. I have no idea where UK law sits on that, but Service Manual Subscriptions has some past discussion.