Hi... Depends on the models of those makes of car... so it's difficult to compare like with like... each "model", then "type" are classed according to different criteria & associated risk of insuring a specific person on those cars... generally for those "similar" type cars... toyota corolla v ford focus... shouldn't be much difference... but again would depend on the engine size, value, etc...
Its for a 1999 toyota corolla 1.3 (1332cc) and a 2001 ford focus 1.4 basic model (engine is 1391cc I think) - I always thought that toyota always had a higher insurance rating than say ford, vauxhall?