Insurance for my MacBookPro

I would like to insurance my MacBook Pro in the UK. Do you know any company that make this kind of covering?

I had the Tech-Pack with Barclays, but the maximum covering for devices is £ 1,500 and my Mac is valued with £ 2,300; so they don't cover it as it is higher quantity.

I really would like to sleep peacefully, as in case of lost or stolen will be a catastrophe.

Thank so much for your help.