Investment Banks are focused on helping large organisations, including governments and commercial companies - to raise money through selling securities on the markets. This enables scaling up to be possible for these organisations, on a large scale.
Corporate Banking provides tailored financial services to large companies and organisations and are distinct from Retail Banking. The complexity and volume of transactions are often much larger in Corporate Banking often adding greater risk.
Retail Banking provides banking services, loans and advice to businesses and the public generally through high-street branches.