basically everything is online nowadays... if u go thru dealer, they will also do it online. Generally the most competitive 2 are msig and chartis, else will depend on what brand or model u buying... some companies are cheaper for some brands or models... u have to check around more.
but seriously, why dun u just go thru a broker... contrary to popular beliefs/ignorance, brokers Dun earn your money, they are paid by the banks and insurance companies. and Also, using a broker does not mean your premium is Higher, in fact it can be lower by a fair bit..
there is No Reaon not to use a broker, but i guess plain ignorance.
i have bought and sold 6cars in the last 2yrs, my brokers have always gotten me better quotes than the dealers or online quotations...
so pls, instead of running around yourself, use a broker who can get u quotes from almost all companies, and get u a decent discount.
i dun intend to introduce my broker, but just wanna point u to the right direction. fyi i dun have any insurance with aviva... they tend to be least competitive for the cars i buy..