Wild flowers in our grass

We have been persuading our 'lawn' to transform into a wild flower meadow for nearly 20 years ! In June / July it is covered in creamy and pink clover, buttercups , daisies and self heal not all pictured here. It is so good that on a fortnightly grass cut cycle it bounces back into flower. We have tried leaving it longer , but it seems to work well as is. I wonder if any of you have any tips or ideas about this.