Three has expressed concerns that its broadband industry rivals may seek to delay the UK's upcoming 4G spectrum auction.
The mobile broadband provider believes that some UK operators stand to benefit if Ofcom puts the auction of 800MHz and 2.6GHz spectrum on hold.
Spare capacity is being made available to mobile operators to provide next-generation mobile broadband and take advantage of long-term evolution technology.
However, Three claimed the recent decision to allow O2 and Vodafone to repurpose existing 900MHz and 1800MHz radio spectrum for broadband use may have affected their short-term appetite for 4G spectrum.
Speaking to the Financial Times, David Dyson, Chief Executive Officer at Three, stated: "It is up to Ofcom and the government to take a strong lead to make sure that any potential disruption to the auction is dealt with effectively.
"O2, Vodafone and Everything Everywhere are all incentivised differently to defer that auction for as long as possible."
Everything Everywhere is the UK parent company for Three's other main domestic rivals, T-Mobile and Orange.