An investment of £750,000 was put into upgrading the venue's heating system and creating the London Suite, which adds an additional six rooms to the exhibition venue’s International Conference Centre.
The suite was used for the first time last week to as part of the Cisco Live exhibition.
David Pegler, chief executive of Excel London, said: "Since the last time Cisco hosted their event with us, we have invested a further £250,000 in the venue's heating system, to make the venue entrance and arrival experience warmer during the winter months.
"We continue to speak to our customers and ensure that they have the best experience possible when they come to Excel. These investments are testament to our continued commitment and ambitions to remain a world class venue."
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