ATG enables bidders from 165 countries to access an underexplored world of secondary goods which have been curated by over 3,900 trusted auctioneer experts

Creating a virtuous circle that benefits both auctioneers and bidders

ATG is an aggregator in the large and fragmented auction industry. We simplify and integrate multiple parts of the online auction process, from the cataloguing of items to marketing, auction hosting, bidding and most recently payment solutions.  In doing so, we enable auctioneers to become genuine online businesses in a cost-efficient way.

Industrial & Commercial

The Industrial & Commercial market covers used equipment, machinery and commercial vehicles from industries such as manufacturing (including plastic moulding, metalworking, woodworking, food and beverage production), laboratories and pharmaceuticals, warehousing, construction, agriculture and real estate. It also includes surplus stock of consumer goods and retail returns, from all areas of retail (including apparel, electronics, homewares, furniture)

Art & Antiques

The Art & Antiques market covers several different categories, including watches and jewellery, furniture, fine art, decorative art, collectables (e.g.sporting memorabilia, antiquarian books, stamps and coins, vintage toys), vintage fashion and classic cars.

Our numbers

digital marketplaces
major sectors
auction houses on our platforms
auctions facilitated in FY23
lots sold in FY23
countries in which we have bidders
offices globally
bids placed in FY23

Our marketplaces


The largest online auction marketplace in North America, listing highly valued items across 16 categories, fom agricultural machinery and yellow iron, to classic cars and collectables.

BidSpotter and together provide a leading marketplace for industrial machinery, manufacturing and food processing equipment auctions. and together provide a leading marketplace for industrial machinery, manufacturing and food processing equipment auctions. 


The UK's leading auction marketplace for returned and surplus consumer product. 

The Saleroom

Europe's leading marketplace for buying art, antiques and collectables at auction.


One of North America's favourite destinations for fine and decorative art, antiques, vintage collectables and luxury goods.


Germany's foremost art & antiques auction marketplace


EstateSales.Net is a leading US estate sales listing site

What we do

We operate leading secondary-goods marketplaces and proprietary auction platform technology, seamlessly connecting bidders from around the world to trusted auctioneers and other sellers across two large markets: Industrial & Commercial; and Art & Antiques.

Our history

We have been supporting the auction industry since 1971. Over the last 50 years, we have expanded into new industry verticals and new geographies, through launching new marketplaces and acquiring complementary platforms. Being a trusted partner and voice for the industry remains our driving goal, every day.

Our strategy

ATG executes against six strategic drivers to unlock the discovery and value of millions of items.

Leadership and Board

ATG’s Executive Leadership team benefits from a unique blend of deep auction industry experience combined with deep technology and e-commerce experience.