Can I extend #12 wire with #14 wire for landscape lighting?

How do you get leave to remain?

Indefinite leave to remain is how you settle in the UK.
How you apply depends on whether you:

1. have a tier 2, T2, International Sportsperson or Skilled Worker visa.
2. have a Global Talent, Tier 1 Entrepreneur or Investor visa.
3. have an Innovator visa.
4. represent an overseas business.
5. have a Turkish Worker or Businessperson visa.