The Cabinet Office offers a service on GOV.UK where you can search for UK government grants.
The service lists grants for
o Voluntary, community and social enterprise organisations (for example, a charity).
o Small or medium-sized enterprises (SMEs) and other businesses, and
The service can be used to::
o Access government grant funding.
o Search and filter to find a grant that matches your needs.
o Find out if you are eligible to apply for a grant, and
o Find out how to apply for a grant.
The service is available at this link to the GOV.UK website.