This guy on ebay may end up selling the complete series on DVD. As he has other complete BB series on DVD's:
https://www.ebay.co.uk/sch/adaroo_12...1&_ipg=&_from=
I actually made the mistake before of buying CBB4 from him, thinking it was the civilian BB4. Not soon after I realised what I had done and had to ask for a refund, lol.