All Clubs should be aware that according to the LTA Code of Conduct that all players under the age of 18 are considered as 'children' (Note 9, Page 2).
Therefore it is essential for any player in the adult league under 18 years old that Clubs  comply with the Welfare & Safeguarding requirements set out in the LTA Club Registration process.
For any 'child' playing in an ADTL fixture, it is the Clubs responsibility to ensure that Welfare & Safeguarding requirements are met and the ADTL cannot be held responsible for any contravention.