Who's bringing the chips? Otter enjoying a fish supper is just one photo in amazing gallery of wildlife images

A startled otter stares at the lens while enjoying a snack. Meanwhile, a green hairy spider camouflages itself against some foliage... and two flamingos kiss.

These incredible pictures, and more, will be on display later this month when 20 of the world's greatest wildlife photographers gather in London and reveal the secrets of their art.

Hosted by zoologist and conservationist Mark Carwardine and wildlife expert and TV presenter Chris Packham, WildPhotos - the UK's largest wildlife photography show - takes place at the Royal Geographical Society on October 19 and 20.

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Snack attack: A giant otter eating a fish is one of the images that will be on display at the WildPhotos exhibition in London on October 19 and 20

Have you twigged what I am? A green hairy spider blends into the background. Hosted by zoologist Mark Carwardine and TV presenter Chris Packham, WildPhotos takes place at the Royal Geographical Society

Take my breath away: A wren male fills the spring air with an early morning song

In the pink: Two flamingos enjoy a peck on each other's beaks

Here kitty, kitty: A brave snapper gets up close and personal with a tiger

Eye, eye, what's this then? A curious insect stares out the lensman during a leaf stand-off

All white? A Polar bear traverses the Arctic snowscape, perhaps looking for his next meal...

The two-day event is packed with inspirational talks and sessions, giving visitors a behind-the-scenes look at some of the most spectacular wildlife images – including winners of the prestigious Veolia Environment Wildlife Photographer of the Year competition.

This year's keynote speech will be delivered by award-winning National Geographic underwater photojournalist Brian Skerry.

From around the world, international greats such as Tui de Roy (New Zealand), who grew up in the Galapagos; Vincent Munier (France), who was raised in the wild region of the Vosges Mountains; sculptor, photographer and writer, Patricio Robles Gil (Mexico) and photojournalist Christian Ziegler (Germany) will show work and share their experiences.

As well as strong international attendance, this year's event will showcase the very best of British talent with favourites including Laurie Campbell, Pete Cairns, Mark Hamblin and Charlie Hamilton James.

Is your name Cliff? Actually, this precarious bird picture was taken by Tuide Roy

Just gotta make a trunk call: A cheeky critter shows off its climbing skills

Hogging the limelight? This prickly little chap heads home after a hard day

Don't get in a flap, now: A stretch of the wings and home to roost

Don't get in a flap, now: A stretch of the gannet's wings and home to roost

Creature of the night: An image, titled Rainforest Angles, by Christian Ziegler

The fisher king: A stunning shot of a bird darting from the river's edge

Feeling blue? A whale deep in thought on the seabed

In plain sight: Wild horses couldn't drag this photographer away from the snowy scene

Richard Edwards, chief executive of Wildscreen, the charity behind WildPhotos, said: 'WildPhotos is now one of the world's leading nature photography events, bringing together the very best professional photographers, keen amateurs and general enthusiasts, and giving them an amazing opportunity to hear the stories behind some of the most iconic images from the world's best wildlife photographers.

'We have an incredible line-up of some of the finest British and international photographers this year and are delighted to have Brian Skerry delivering the keynote.

'WildPhotos appeals not only to those in the industry, but to anyone interested in the power nature photography has to communicate the wonders and challenges facing our natural world.'