Met office update
UK Outlook for Monday 30 Jul 2018 to Wednesday 8 Aug 2018:
Cloud and rain, possibly heavy at times, with strong winds will affect the northwest on Monday, this clearing with showers possibly following. Tuesday will be bright with sunny spells and lighter winds, but some showers are likely in the northwest. The first few days of August are expected to be mainly dry and fine across the UK but there is a risk of breezier weather with some rain in the northwest at times. Looking further ahead a good deal of fine weather is expected across many areas, although occasional heavy showers and the odd thunderstorm are possible. Temperatures will be around normal in the northwest to begin with, but otherwise it is likely to become very warm with a chance of hot conditions developing again, especially across the south.
UK Outlook for Thursday 9 Aug 2018 to Thursday 23 Aug 2018:
Throughout this period it seems most likely that the weather pattern will change only very slowly. Western and southern areas will often be dry, sunny and very warm, but with the risk of some cloudier periods with rain at times, or heavy showers and thunderstorms. Further north and east drier and more settled conditions are expected to be more dominant, although with the ongoing risk of heavy showers and thunderstorms breaking out at times. Temperatures are expected to remain widely above average for most, with further spells of very warm or hot conditions probable, and a likelihood of very hot conditions at times, especially in the south.
https://www.metoffice.gov.uk/public/weather/forecast