ISPreview has lead this morning with the news that Hyperoptic is introducing a £5/m charge for those who want a static IP address, and where in the past IP addresses were on a long term lease or dynamic, dynamic IP addresses will be the order of the day and more importantly these will be via carrier grade NAT (CGNAT).
Hyperoptic is far from being the first provider to dabble with CGNAT, as BT Consumer has done so for some of its entry level products, and mobile providers commonly use it. The likely reason for the adoption is that IPv4 addresses are getting harder to find and the cost of buying spare blocks from other providers is increasing, so making maximum use of the resources you already have is the order of the day. The vast majority are not likely to spot any major problems, but there will be side-effects e.g. one IP address blocked due to abuse might affect hundreds of people. The ultimate solution is the roll-out of IPv6 but as with many providers this is taking longer than expected and as the adoption of IPv6 by services over the Internet is also lagging even if you have IPv6 you are still forced back to IPv4 for some sites/services.
IPv4 exhaustion is not a symptom of a failing UK Digital Economy but it is actually a global problem. The trade in IPv4 blocks generally only becomes visible when overseas blocks appear in the UK but services such as geo-blocking for BBC iPlayer have yet to be updated.
Time will tell how well the Hyperoptic implementation of CGNAT is implemented, change at broadband providers is never popular unless it is a price cut or a truly free speed boost.