Elimination rounds will be shot at St Fagans National History Museum of Wales. This is a flat area. Which is an advantage, especially since the British Met Office has issued an early warning of severe weather for Friday. The link might be changed so here's the text: "(with 60% or better confidence) heavy rain will affect southern parts of the United Kingdom on Friday. Highest rainfall totals are likely to be across South West England, South Wales and parts of Central Southern England, with accumulations in excess of 50 mm in places."