Dive training, travel and equipment will all be strongly in evidence at the event, with the emphasis on new developments across these and other aspects of the sport.
And, with more than 300 companies and an exhibition floor (pictured) featuring special focus areas, displays and interactive features, organisers say there'll be something for all divers - wherever their diving interests lie.
Two of Britain's best-known divers, familiar to wide audiences from their primetime TV series, will be speaking at the event.
Monty Halls and Paul Rose have both featured on our screens in recent months, their respective series, Great Irish Escape and Britain's Secret Seas, enjoying national early-evening slots.
Both series offered fascinating insights into the wide range of dive sites and marine life to be found in our local UK waters, and visitors to DIVE 2011 will be able to hear more about the diving and filming of the programmes from the men themselves.
Other key speakers at DIVE 2011 will include Andrea Marshall, the best-known manta diver on the planet, who has been travelling the world to build knowledge of these amazing rays.
Wreck diving will also feature strongly. Jack Ingle is set to deliver an expert's tour of the array of vessels that met their end around the island of Malta. Meanwhile, technical diver Mark Powell will be devoting his presentation to the controversial topic of solo diving.
Special in-hall attractions include two diving pools, the British Isles Experience, the Historical Dive Gear display, the new PhotoZone area and the 3D NoTanx Freedive Simulator.
The show's PADI Village will feature attractions including a special seminar area, and BSAC will have a strong presence with not only its main club stand but also a series of BSAC Pods run by local branches and a special Student Den area for university dive clubs.
DIVE 2011 opening times are 9.30-6.00 on Saturday 22 October and 9.30-5.00 on Sunday 23 October. The show is supported by The British Forces Foundation (The BFF) – the charity dedicated to boosting morale among troops on the frontline.
* Special advance booking prices offering savings of up to £4 per person off full-price tickets are available up to midnight on Tuesday 18 October.