I had the same trouble trying to renew mine last year
Thought, oh i've turned 26 now & have 5 years no claims, should drop from £800 to something more respectible but struggled to find anything under a grand!
Went direct to swift cover who gave me the best quote by hundreds at around £750 full comp or £600 3rd party. Went 3rd party in the end as the cost of the excess was more than I paid for the car so wouldn't bother claiming for damage to my car anyway