The central London venue, the UK's national academy of science, has spent more than £2m on refurbishments and new event options. It is moving its library to a new location and has refurbished and renamed the old library The Library Suite. Overlooking The Mall, the space is able to host private events for 30-100 guests.
Other areas available for private hire at the Grade I-listed address include 12 recently refurbished rooms with capacities of 10-300 delegates. The main venue is also capable of hosting a drinks reception for 1,000.
Nicholas da Costa, Head of Conference Services at the Royal Society, said: "The Royal Society has hosted some of the most important events in the scientific world, so it is vital to make our venue as widely accessible as possible. The opening of The Library Suite will expand and enhance our ability to meet these needs."