Tuesday, 28 May 2019 - 16 minutes
Darren went down to see the team at Sigma to find out what they do
Light rain
High: 11°C | Low: 1°C
Medium-level cloud
High: 12°C | Low: 3°C
Light rain
High: 12°C | Low: 2°C
Light rain
High: 12°C | Low: 1°C
Light rain
High: 12°C | Low: 1°C
Medium-level cloud
High: 11°C | Low: 2°C