A big difference between OVPN and other VPN providers is our intense focus on physical security.
One of the requirements for offering physical security is that we don't rent servers. Instead, we rent space in a server rack where we install our own equipment. This has several benefits for the physical security of our servers, but it also has one large downside. Exclusively using our own equipment becomes a whole lot more expensive than simply renting a dedicated server.
We always colocate at least three servers per datacenter, offering at least a 3Gbit/s connection per data center to provide our customers with the best possible bandwidth. Unlike most VPN providers, this implementation means that we can't simply deploy or remove servers at a moment's notice as needed depending on load.
The overall traffic in London has been very low under a long time, which unfortunately means we can no longer justify having servers there. It becomes too expensive in relation to how little they are used. It is, however, not out of the question that we may open servers in London again in the future.
With that said, we do have some good news too, and that is that we've already decided where we are going to open servers next. More information regarding that will be published within the next few weeks.