I think the various arguments needs to be thought through.
I don't really accept the argument that there's no need for faster connections, because the rule of thumb that served me in my life-long IT career is that demand will always exceed capacity at some point... this is true for bandwidth, for physical network points, disk space / storage, and all things IT. Investing more for additional capacity now simply means that the customer is buying more time until they need to upgrade again, but upgrade again they will, without fail.
Obviously *some* people will have no need for faster connections, or perhaps won't be able to benefit from the new technology for other reasons, but this is not the same as saying that we (the UK) as a nation don't need it, in the same way that we won't accept a car-less person's claim that we don't need more roads or that we don't need to reduce congestion etc.
As for the health risks, I am sure that living in a crowded city, breathing fumes from exhausts, eating fast food, and getting bombarded by electromagnetic radiation is less healthy than living on a mountain in Switzerland, breathing crisp air from the Alps, and eating freshly made bread and cheese.
So we are already making compromises between progress and health, and part of the counter-argument here would be that the negative effects of pollution and radiation are more than compensated-for by the advances in medicine and healthcare.
That said, I am by no means convinced that we are on the right path as such.
While I can accept that technology will in some cases harm our health, and that's part and parcel of progress, this is not to say that society should write an open cheque.
Scientific search and better understanding of what we are getting ourselves (and future generations) into is vital. Then we can decide how to proceed.
It can take 10 or 15 years to develop and test a new drug, and only then we can assess if the benefits outweigh the downsides. And yet new technology is being rolled out first, and the studies are carried out later.
But the Luddites who burn down masts and spread conspiracy theories and other scare stories are not helping the process, if anything they are trying to compound solid science with near-witchcraft, making us all worse off in the bigger scheme of things.