Controversial comments by the deputy leader of Birmingham City Council about fundraising for an Elan Valley heritage centre were not positive enough to be broadcast, according to a television station boss.

Joe McConnell, the editor of Biztv, said he took the decision not to screen an interview with Paul Tilsley because the questions did not reflect "positive business news stories".

In an un-broadcast version of Biztv's Now You're Talking series, Coun Tilsley can be seen defending the council's decision not to give a donation to help build the Elan Valley museum and heritage centre.

He suggested that the Mid-Wales valley, flooded more than 100 years ago to provide Birmingham with water, had gained as much from the enterprise as the city of Birmingham.

Capital investment in the Elan Valley project allowed poor tenant farmers to buy smallholdings and become wealthier, Coun Tilsley said.

When presented with an unedited version of the 30-minute tape, Coun Tilsley said he was not happy with the questions put to him by interviewer Adrienne Lawler. She had not displayed a "proper understanding" of the way local government works, he claimed.

Mr McConnell said Coun Tilsley had played no part in deciding not to screen the interview.