The Finnish phonemaker teamed up with Spectrum Interactive and Selective Media to provide 26 free internet hotspots in the UK capital via transmitters affixed to telephone boxes.
Plans were in place to extend the initiative to all 1,800 of Spectrum's telephone boxes, but Nokia has now withdrawn from the partnership for unspecified reasons.
"Nokia were sponsors of the initial trial; although we are no longer involved in the project, we are delighted to see the roll out offering more London Shoppers the opportunity to use Wi-Fi," read a statement from the firm.
Spectrum and Selective will continue to develop the service, which attracts more than 25,000 unique monthly users.
Virgin Media is also bringing free Wi-Fi access to the UK capital, offering internet access on the London underground during the Olympics. Sky subscribers can also connect in various public spaces following the broadcaster's acquisition of The Cloud.