I've got a MK Quickline Square D (metal) consumer unit set-up like (reading left to right)
1. DP Isolator 100A
2. Immersion (Type 2 M6 MCB, 20A)
3. Smoke alarm (Type 2 M6 MCB, 16A)
4. Lights down (Type 2 M6 MCB, 6A)
5. Lights up (Type 2 M6 MCB, 6A)
6. Blank (DVMMY 100A)
7. RCCB 100A...