The group CEO appointment would complement existing skills, focussing on a strategy to offensively pursue growth, McGeoch said.
"The future of the television and radio markets continues to look bright. Weldon said he had followed MediaWorks closely and paid tribute to the commercial board.
"Our aim is to grow market share and continue to build the most vibrant, entrepreneurial and spirited organisation that is a real favourite of all New Zealanders, " said McGeoch.
Other non-executive directors include reality TV queen Julie Christie and the Australian media director Martin Dalgleish.
After a long period MediaWorks has been more stable under the ownership of its former bankers.
But still faces challenges - from fragmentation of the television market, a tough advertising market and after years where it could not afford investment it has been trying to catch up with its rival Television New Zealand.
Read the announcement here: