Her Majesty's Coastguard (HMCG) is a section of the Maritime and Coastguard Agency responsible for the initiation and co-ordination of all maritime search and rescue (SAR) within the UK Maritime Search and Rescue Region.

The RNLI's volunteer lifeboat crews provide a 24-hour rescue service in the UK and Republic of Ireland. Their seasonal lifeguards look after people on busy beaches and the Flood Rescue Team helps those affected by flooding.

Border Force is a law enforcement command within the Home Office. They secure the UK border by carrying out immigration and customs controls for people and goods entering the UK.

The RYA is the national body for dinghy, yacht and motor cruising, all forms of sail racing, RIBs and sports boats, windsurfing and personal watercraft and a leading representative for inland waterways cruising.

The MCA works to prevent the loss of life on the coast and at sea. They produce legislation and guidance on maritime matters and provide certification to seafarers. They provide a 24-hour maritime search and rescue service around the UK coast and international search and rescue through HM Coastguard.