Yes
NauticEd is an official RYA Shore based school. Our RYA Day Skipper theory course is an official course and is therefore accepted at every RYA Practical school worldwide as an official course completing the theory requirements. Upon the completion of the NauticEd RYA Day Skipper Course, you are issued a completion certificate which you can take to your practical school as proof. You can also give to your practical school your NauticEd account email address and Logbook code and they can use that to verify online that you has passed the course. Plus if you fill out your NauticEd logbook online, your practical school can see how much experience you have and can thus tailor their training to your past experience.
This is NauticEd's official recognition
https://www.rya.org.uk/wheres-my-nearest/venue/361741
To find a practical RYA training center go to https://www.rya.org.uk/Pages/wheres-my-nearest.aspx/start