As a member of the older generation I would advise "anyone" to try Direct Line but you must log on to their site (They do not normally show up on the popular insurance search web sites)
May not be good for the younger drivers but I would recommend anyone, young or old, to try them. Especially good if more than one car in the household is insured with them. My own son at 20 (2 years no claims) got his insurance reduced considerably because of multiple family car insurance with them.
Young or old. Try them!