Table:
0
A
B
C
D
E
F
1
Series 1
Series 2
Series 3
Series 5
Series 9
Series 11
2
Peter Jones
Peter Jones
Peter Jones
Peter Jones
Peter Jones
Peter Jones
3
Simon Woodroffe
Theo Paphitis
Theo Paphitis
Theo Paphitis
Theo Paphitis
Piers Linney
4
Doug Richards
Doug Richards
Deborah Meaden
Deborah Meaden
Deborah Meaden
Deborah Meaden
5
Duncan Bannatyne
Duncan Bannatyne
Duncan Bannatyne
Duncan Bannatyne
Duncan Bannatyne
Duncan Bannatyne
6
Rachel Elnaugh
Rachel Elnaugh
Richard Farleigh
James Caan
Hilary Devey
Kelly Hoppen

Questions and formulas:
Question: What series 1 has a Doug Richards in Series 2?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,B1="doug richards"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F6,B2:B6="doug richards"),1))
Level: medium
Question: Who in series 1 corresponds with Peter Jones in series 5?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,D1="peter jones"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F6,D2:D6="peter jones"),1))
Level: medium
Question: Who in series 5 corresponds to Deborah Meaden in series 3?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,C1="deborah meaden"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F6,C2:C6="deborah meaden"),4))
Level: medium
Question: Who in series 11 corresponds to Peter Jones in series 1?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,A1="peter jones"),6))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F6,A2:A6="peter jones"),6))
Level: medium
Question: Who in series 9 corresponds to Peter Jones in series 2?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,B1="peter jones"),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F6,B2:B6="peter jones"),5))
Level: medium