Thanks to all those who responded 
Although somewhat ironically I was in the process of figuring out the best way to insure it, at the time my loss was uninsured. I will certainly have the cover before I do any further trips with my replacement equipment.
I've also now got the Nauticam vacuum system on the housing for extra protection.

Although somewhat ironically I was in the process of figuring out the best way to insure it, at the time my loss was uninsured. I will certainly have the cover before I do any further trips with my replacement equipment.
I've also now got the Nauticam vacuum system on the housing for extra protection.