And yes, Bespoke bunting is not for all occassions, you can't possibly customize the union jack or alter/ find new ideas for the traditional Christmas symbols. At times most national or traditional festivals are so deep rooted in our English traditions that you can't possibly change anything related to the traditions and still maintain the festive spirit alive.
For cultural events like open festivals like concernts, rock shows, jazz nights, possbilities of bespoke bunting being more apt, are there, but still, when spaces are large and bespoke bunting required to cover the entire area is overwhelming stock bunting flags are a good option to blend in with your bespoke bunting flags and give you good coverage and cheerful decoration while saving the cost of bespoke bunting for all those ill lit areas, corners and places where the visitor eye might not register the branding.