Have used two companies in UK for recommendations and parts:
1.
gerry@hawkcars.co.uk, very knowledgeable about all things AC
2.
steve@brooklandsmotorcaompany.co.uk Very knowledgeable about all things Ac, especially AK's, steve has most all original engineering drawings as well as some of spares from one of AL's receiver filings filings and body bucks...I just got some original badges, and manufacturers plates from him