I have a macbook and a canon slr camera that together are worth just under £1500, I'm going away for a gap year to Australia and probably NZ and some of South East Asia too, but no insurance company I can find will insure both electronic items for a high enough value, or for more than three months?
World Nomads can cover your gear up to £1250 when you add it as a specified item.
Try this link by way of example and then look for upgrade your cover halfway down the page.
World Nomads was designed specifically for long term travellers so you can buy up to 18 months and continue to extend should you need to.
Have a great trip almost 7 years ago