Table:
0
A
B
C
D
E
1
Position
Channel
Analogue terrestrial channel
Digital terrestrial channel
Internet
2
1
BBC One
1
1 50 (HD)
bbc.co.uk
3
2
ITV
3
3 33 (+1) 51 (HD)
ITV - itv.com
4
3
BBC Two
2
2
bbc.co.uk
5
4
Channel 4
4 N/A (in Wales)
4 8 (in Wales) 13 (+1) 52 (HD, not Wales)
channel4.com
6
4
S4C
N/A
4 (in Wales) 53 (HD, in Wales) N/A (rest of UK)
s4c.co.uk
7
5
Channel 5
5
5 44 (+1)
N/A
8
6
ITV3
N/A
10
itv.com
9
7
ITV2
N/A
6 27 (+1)
itv.com
10
8
E4
N/A
28 29 (+1)
e4.com
11
9
Sky Sports 1
N/A
N/A
skysports.com
12
10
Sky1
N/A
N/A
sky.com
13
11
CBeebies
N/A
71
bbc.co.uk
14
12
ITV4
N/A
24
itv.com
15
13
BBC Three
N/A
7
bbc.co.uk

Questions and formulas:
Question: How many digital terrestrial channels are there for channel 4?
Formula: ROWS(UNIQUE(FILTER(D1, B1="Channel 4")))
Formula2: ROWS(UNIQUE(FILTER(D2:D15, B2:B15="Channel 4")))
Level: medium
Question: What is the channel that is on digital terrestrial channel 10?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,D1="10"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E15,D2:D15="10"),2))
Level: medium
Question: What is the digital terrestria channel number for itv3?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,B1="ITV3"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E15,B2:B15="ITV3"),4))
Level: medium
Question: What is the position of digital channel 5 44 (+1)?
Formula: SUMIFS(A1,D1,"5 44 (+1)")
Formula2: SUMIFS(A2:A15,D2:D15,"5 44 (+1)")
Level: easy