That would be roof bars which should be ok but check with motability first.
if in doubt check with motability first and get it in writing.
Imagine if you fit a bike ontop of you car and you have yo brake suddenly and you bike comes loose and becomes a missile and causes damage or injury you want to be sure when you fill out that claim form that you are covered
Roof rails are normally standard fit and then you need to get a foot pack and roof bar to fit to the roof rail
Any insurance company will be looking for away not to pay out money so check first