Right, I've been searching thru' the hubb & have found loads of conflicting advice(!) - so after a couple of days searching these are my results.
Note - assumptions, you are a:
1) UK citizen
2) wanting a trip over 90 days
3) on a bike bigger than 125cc
The following companies (which people have reccommended) had general exclusion small print that would invalidate insurance based upon the above assumptions:
World Nomads - Keep Travelling Safely
6 months: £168 worldwide incl usa
Covered: Motor Biking (full UK licence, up to 125cc and helmet to be worn)
motorbike touring or where a motorbike is the main mode of transport
Cheap Annual Travel Insurance: Single Trip Travel Insurance: Car Breakdown: Computer
Long Stay travel insurance
You are not covered for
a. claims resulting from motorcycling or quad biking.
Car Insurance, Home Insurance, Travel Insurance, Life Insurance UK
I phoned them up to enquire whether in their extreme travel policy, "overlanding" covered motobike travel. The lady put me on hold and eventually got back to me saying that none of their policies covered motorbike riding - they were just, "standard holiday"-type policies.
Car Insurance, Home Insurance, Travel, Life, Health and Investments - Norwich Union UK
What is not included:
d) You motorcycling:
- as a rider or passenger on a machine over 125cc; or
- as a rider or passenger on a machine 125cc or under unless You wear a crash helmet and, as a rider, You hold a full UK motorcycle licence
The one policy that I found that fits the above assumptions is:
Direct Travel Insurance - Great Value Holiday Insurance and Annual Cover
6 months single trip insurance
page 35, General Exclusions
"2 Anything caused by:
travelling on a motorcycle over 125cc, unless the rider holds a valid licence which lets them ride a
motorcycle of more than 125cc;"
Total cost: £143
I hope this helps some of you guys looking for insurance!