Ofcom has published its latest complaints data, revealing the telecoms and pay TV providers that it receives the most complaints about. This report only includes complaints that have been made directly to Ofcom, so it differs from the recent customer service survey that contacted consumers and asked for their feedback.

The quarterly report, which covers July to September 2012, is the regulator’s seventh such publication.

The City of London Corporation has extended its partnership with WiFi provider The Cloud, enabling anyone to enjoy unlimited free WiFi inside the ‘Square Mile’ financial district.

There’s been a free WiFi service available in the City of London since 2007, although until now it’s only been free for the first 15 minutes. A temporary arrangement to provide unlimited access during the 2012 Olympic and Paralympic Games saw user numbers almost double compared with the previous three months.

Scottish rail operator ScotRail is bringing free WiFi to all of its ‘class 170’ express trains.

The company has been running a trial scheme on four trains since the summer. WiFi equipment will now be installed on 55 additional trains from March 2013 during planned weekend maintenance to avoid taking the trains out of service.

US mobile operator Sprint has agreed to acquire the half of broadband provider Clearwire that it doesn’t already own.

It’s paying $2.2 billion for Clearwire, which offers 4G wireless broadband services and also holds a large portfolio of mobile spectrum in the USA.

The UK’s 4G mobile spectrum auction has only just started - but already there’s a second auction being planned.

That’s because the Ministry of Defence is selling some of its radio spectrum to raise money; a plan that was announced in the Government’s Spending Review two years ago.