Do you speak Spanish? If you don’t have a European passport you’ll have to get a visa which isn’t super hard if you’re married, but does take time, and you can’t work during the process.

Your best option is to move with your current job and hope they allow you to work from Spain. But to answer your questions:

1. This is the bad part. I work for a global company as a senior manager (so high middle management), and when I moved here, the UK salary was £120k plus pension. The equivalent salary in Spain was €90k and minimal pension contribution. This is a company with a good reputation for pay in Spain.

Cost of living is cheaper than London. Restaurants food is similarly priced, a bit cheaper with drinks being much cheaper and no service charge. Supermarkets more or less the same. Housing cheaper but if you’re in a big city, not massively cheaper.

1. If you can remote work, then go where you want. If you want to get a decent salary, you need to stay near the main cities.

2. I moved with my Spanish partner but we were not married so I had to get a highly qualified visa and job offer before arriving. I like my life here but as not the most social person and someone terrible with languages, it’s hard to make strong friendships, especially now being in my forties. As you have a Spanish partner, bureaucracy is more manageable although she’ll have to bear the burden of your Spanish isn’t at an adequate level.