If, as you say, you have travelled, presumably you have taken out travel insurance before. If so, then why not start with the last Company you held a policy with. If not, then if you have any financial connection with a company that offers travel cover, approach them.
I have always found www.insureandgo.com to be the most competitively priced anywhere. I have found their prices to be really good when it comes to getting a policy with a low or no exceeds to pay.
Bc that's pretty good.
I thought I was doing okay with the Post Office at about £50.00 annual (reduces by 10% every year), but will definitely be moving my business come December.