Perhaps, but then we have effective safeguards over here that the US doesn't have. Particularly, we have a truly independent and non-politicised judiciary. That's a big deal.

We don't have the absolute and uncompromisingly worded constitutional rights of the US, but we're also far less likely to suffer erosion or elimination of those rights in practice that we see in the US. E.g. If the UK government wanted to have National Security Letters they'd just pass a law allowing them to do so. But there's no way the judiciary would allow them to create and apply such letters otherwise, the way it happened in the US. So yes the security state here does go too far IMHO but it's much more explicit and open to public debate and challenge.