Businesses in the retail, leisure and hospitality industries can apply for government grants of up to £9,000 to help them survive until the spring.
All non-essential businesses such as pubs, cafes and clothes shops must close under the latest lockdown, set to last at least six weeks.
Only takeaway food and drinks and click and collect services are allowed under the restrictions.
The new grants, announced by the treasury on Tuesday, are being offered alongside the furlough scheme, which has been extended until the end of April, and business rates relief in a bid to keep businesses afloat and protect jobs.
Grants are to be between £4,000 and £9,000 depending on the value of the business and the money will not need to be re-paid.
The government has also pledged a further £594m to support other businesses affected by the restrictions but not eligible for the grants. Funding is set to be distributed by local councils.
For full details about the grants, see gov.uk