Dragonball Z is only shown in the UK (to my knowledge) on Cartoon Network and Cartoon Network+. (Channel 601 and 602)
Mondays-Fridays (afternoons)
Cartoon Network
5.00pm-Toonami begins with Dragonball Z.
5.30-Tenchi Muyo.
Cartoon Network +
6.00pm-Dragonball Z
6.30pm-Tenchi Muyo
Mondays-Fridays (evenings)
Cartoon Network
10.00pm-Dragonball Z.
10.30-Gundam Wing
10.50- Tenchi Universe
11.15-Batman of the Future
Cartoon Network+
11.00pm-Dragonball Z
11.30- Gundam Wing
11.50- Tenchi Universe
12.15- Batman of the Future
Mondays-Fridays (mornings)
Cartoon Network
6.00am-Tenci Muyo (repeated form previous afternoon)
6.30am-Dragonball Z (repeated from previous afternoon)
Cartoon Network+
7.00am-Tenchi Muyo
7.30am-Draghonball Z.
Weekends (mornings)
Cartoon Network;
10.00am-Dragonball Z
10.30am-Gundam Wing
10.50- Tenchi Muyo
Cartoon Network +:
11.00am-Dragonball Z,
11.30am-Gundam Wing
11.50am-Tenchi Muyo
Weekend (evenings-Saturday and Sunday)
10.00pm-Dragonball Z
10.30pm-Gundam Wing
10.50pm-Tenchi Muyo