These ideas are ways to start thinking about business awareness. You’re unlikely to use these as evidence of business skills in a written application, but they might be things you reference to demonstrate an ongoing interest.
Do a Micro-internship. or undertake a 'virtual internship', e.g. through Forage, which offers free, short (6-8 hours) open-access courses set by leading companies and which challenge you to work through in-depth case studies that reflect that company's industry and work.
If you're volunteering or in part-time work, suggest ways to improve efficiency, resulting in time or cost savings.
Sign up for the Enterprising Oxford newsletter, and engage in their events across the University.
Commit to self-directed learning for example in marketing, finance, or business management with the Government's Skills Toolkit or LinkedIN Learning (free using your SSO via Molly, IT Services learning portal)