Controversial plans to build a 20-metre 5G mast in Stanmore were approved by Harrow Council at a Planning Committee meeting this month.
Councillors moved to approve the structure which will be built in Elizabeth Gardens despite concerns over the height of the mast and safety concerns.
There were also concerns surrounding its position in a built-up residential area and the proximity of housing to the huge structure.
Marilyn Ashton, deputy leader of the Conservative group, on Harrow Council, said that the council have previously refused plans to build other masts, such as one in the Stanmore Hill conservation area.
She said: “I do accept that that it is a challenge and we do struggle because this technology is so vital and I’m not disputing that.
“I was just really quite upset with the officers, because they could have refused this mast for the same reason they refused others across the borough.
“But for some reason this one was not refused when it is not really in an ideal position.”
Marilyn added that although the structure seems overly tall, after doing some research she found that the 20-metre height is necessary.
She said: “I do think there is a reason why they have to be huge. The reason why they must be at least 20 metres high is because if they weren’t, they could potentially be a hazard.
“They are not a hazard because they are so high that it can’t affect anyone.”
Harrow Council have been contacted for comment.