It is possible to subscribe to Lebara Play through their website or apps. Currently it is not possible to order a box. 

Address:
Lebara Media Services Limited,
25 Copthall Avenue,
London, EC2R 7BP,
United Kingdom

Website:
www.lebaraplay.com 

Facebook:
www.facebook.com/Lebaraplaytamil 

Channel list:
https://play.lebara.com/dk/en/Tamil/live