transact

It said its banking systems were unaffected so customers could continue to "transact securely."

Mr Smith said that Horizon began to creep up the priority list when a new online version would freeze in hundreds of sites - which directly affected postmasters' ability to transact - hitting the overall business.

As fair giants like Art Basel and Frieze have continued to add events across the globe, they have found art dealers game to take part, eager to transact.

And many owners may wait to transact until values stabilize even more or potentially start rising.

Here are some tips on how to transact business as safely as you can, in both the paper and digital realms.