Works fine, but not a huge win on cost. There are more costs than just the launch itself though. The UK has a pretty big space industry. Lots of satellites and

Works fine, but not a huge win on cost. There are more costs than just the launch itself though. The UK has a pretty big space industry. Lots of satellites and satellite components are made here. Not needing to ship your payload to Kazakstan probably saves a few quid if you're building a lot of it in the UK, and the reduced risk of it being damaged in transit will help significantly.