Wikipedia:Articles for deletion/Caesar Twins
Youth World Champions in acrobatic sports" means they've competed in the top level of their sport in their age group (the times articles confirms this), meeting  and I doubt non-notable people would be invited to perform in the Royal Variety Show. They're covered significantly in at least 2 independent reliable sources, so they meet  too
— User:MacGyverMagic, 09:19, 14 January 2009 (UTC)
Stance: keep
Cited policy: WP:ATHLETE||WP:GNG (Wikipedia:Notability)