NGW's line-up of 12 stations included two proposed services from Channel 4, leading Channel 4 to say it had not been consulted by NGW.
NGW does not deny this but says it is "common sense" for it to provide Channel 4 with capacity if its rival loses its bid, because Channel 4 has a lot to offer as a content provider.
Channel 4 has put forward three of its own stations in the 4 Digital Group bid - E4 Radio, Channel 4 Radio and Pure 4. It said that there is no guarantee it would launch these stations if NGW wins.
NGW said the two slots it has reserved for Channel 4 are very similar to two of the proposed stations: one is talk-led and the other is music and entertainment led.
Ofcom said there was no problem with NGW's bid, because if it did win it would be able to go ahead and launch a multiplex without Channel 4. It said NGW had an obligation to set out the format of the services it would provide, but had no obligation to identify the providers of the services.
Out of the 12 stations in NGW's bid, five of the providers are marked confidential.
The others are Channel 4; CLT/UFA, which will offer Radio Luxembourg; London Christian Radio offering Premier Christian Radio; Somethin' Else offering Radio Play; Children's Radio UK offering Fun Radio; Colourful Media offering Colourful; and the BBC offering BBC Asian Network.
Ofcom is seeking views on the applications by June 15 and will make its decision by the end of July.
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