That businesses only be required to make a return when the shareholders/ directors change. Saves the 2+ milion small businesses that don't really change that much £15-30 a year in red tape cost and frees HMRC from the bueaucracy costs of monitoring whether businesses have done so. HMRC can check whether the 363 is up-to-date when it conducts its tax/VAT audits of businesses every 3 years.
Why does this idea matter?
Saves business owners cost and time; saves government money