The first named crew is on the Middlesex Station
221) Mortlake A & A (=H)┐
│ Reading (=E)
222) Maidenhead RC (=E)──┐ Reading (=E) ├─────────────────────────
├─────────────────────────┘ 1/2 length
223) Reading (=E)────────┘ 3 lengths