The thousands of companies involved in London's Olympics can now advertise their contribution, after restrictions were lifted.
The government has given 2-million pounds to the British Olympic Association to operate the new "supplier recognition scheme".
The association will license firms allowing them to highlight their work at trade shows.
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Donald Trump is to visit the UK on July 13 and hold bilateral talks with Theresa May, Britain's ambassador to the US has said.
The Football Association has announced it has received an offer to buy Wembley Stadium.
The most hotly-tipped date is July 13, following the Nato summit which the president is due to attend in Brussels on the previous days.