The BBC has announced it plans to launch five new high definition channels by early 2014.
There will be HD versions of BBC News, BBC Three, BBC Four, CBeebies and CBBC.
They will be available over rooftop aerials via Freeview receivers as well as satellite and cable services.
The news coincides with regulator Ofcom's announcement that is making it possible to launch a total of 10 new HD channels using airwaves freed up by the switch off of analogue TV.
"BBC One HD and BBC Two HD have already proved to be highly valued by our audiences and I'm delighted that we're able to follow this with the launch of five new subscription-free BBC HD channels by early 2014," said the BBC's director general Tony Hall.
"These new channels will allow us to showcase more of our programming at its very best."
At present there are only four HD channels offered over Freeview, which launched its HD service in 2010.
They are BBC One HD, BBC Two HD, ITV HD and Channel 4 HD. These include variants of the BBC One HD service for Scotland, Wales and Northern Ireland as well as the broadcaster's Red Button service.
BSkyB said it had no plans to launch an HD service on Freeview.
ITV, Channel 4 and Channel 5 had no statement at this time as to whether they intended to take advantage of Ofcom's move.
Two of the BBC's new channels - BBC Three HD and CBBC HD - will utilise existing unused capacity, and CBeebies HD and BBC Four HD will share a channel since they will not be broadcast at the same time.
As a result there is still the potential for up to a further eight new HD channels to be offered over Freeview as a result of Ofcom's move.
Transmission company Arqiva will provide the infrastructure behind the new Freeview services, having being awarded a licence to do so by the regulator. It will handle other applications for the added capacity.
The company has indicated that up to 70% of the UK population should be able to receive the new channels over their aerials.
The 550-606MHz spectrum band being used was freed up as a result of the UK's digital TV switchover, which was completed last year.
Ofcom has said it reserves the right to take back the bandwidth from December 2018 if it needs to prevent a "capacity crunch" caused by the roll-out of future mobile broadband services.
The BBC has indicated it also wants to launch English regional variants of its existing BBC One HD service as well as Wales, Scotland and Northern Ireland editions of BBC Two HD. This would not need any of the new capacity. It would, however, need to be approved by the BBC Trust.
More than 50% of homes in the UK are already HD-enabled. The BBC said it expected that figure to grow to 90% by 2019.