Try Liverpool Victoria. Yep, they seem to specialise in the over 70's but they beat any other quote my wife could get on the 'Dub...... Was much cheaper than putting it on as a second car on my policy, even with my 7yrs NCD etc, etc. Came in at £420 fully comp inc business use, and she only has 3 yrs NCD. Bargain.
BTW- Mate of mine used to be a broker, and advised very strongly against the likes of Elephant. Steer very clear of their "bonus accelerator" offer, and even their full policies are not as watertight as they should be, allegedly......