Nipperspal09

hi there, i need some advise. i have had my african grey Nipper for 15 months. i love him to pieces. but my partner and i are going away for a week on holiday soon and i dont know how to ensure he will be ok. when we bought him we were told that the previous owner sold him because she couldn't handle him. he seems to have some trust issues and tends to bite, understandibaly this frightens our friends, and honestly i dont know if i trust anyone with him. this is a real issue as my partner and i have been together for 3 years and have never been away. any advise would be great. thank you. nipperspal.