British wholesale gas prices rose on Friday due to colder long-term weather forecasts than previously. * Day-ahead gas price up 0.75 pence at 59.25 pence per therm by 1025 GMT. * Within-day gas price up 0.85 pence at 59.50 p/therm. * Weekend delivery contract up 1.48 pence at 58.58 p/therm. * Long-term temperature models are showing a colder end to the month than previously forecast and temperatures are forecast to return seasonal norms late next week, which is driving the price rise, traders said * “According to our latest long-term forecast, consumption in late January and the first half of February is expected ... (full story)