ThermaTwin Solar Thermal panels can be fitted to any roof with a Southern aspect. Whilst due South is often thought to be the most appropriate orientation, installations on roofs between ESE and WSW can still be very effective at collecting the suns rays to heat hot water.
Similarly, whilst the South West of the UK gets the best hours of sunshine, properties in the far North of Scotland (which are often off mains gas) can still benefit significantly from a ThermaTwin solar panel.