This came from Alan who asked for our help with his spouse’s application for a 2.5 year visa, following her spending 6 months on a Fiancée visa in the UK. Those “Home Office's cryptic instructions” can be indeed a minefield but so far, we have managed to decipher them with a 100% success rate. We are particularly good with the Appendix FM “code”.
The next step for will be to renew a visa after 2.5 years and then to apply for permanent residency after 5 years. Both steps can be done using same-day service, such as the one we use in Croydon.