BBC says soggy Thurs and Fri.

http://uk.weather.com/weather/10day-Sevenoaks-TN14 - has changed since yesterday and is now also saying wet.

http://www.theweatheroutlook.com/forecast/uk/TN14 - has also changed overnight and is now showing Friday mostly dry and Sunday only light drizzle (but otherwise wet)

http://www.metcheck.com/V40/UK/FREE/dayforecast.asp?zipcode=TN14%207NT&day=3 (is working today) shows Thurs dry until 4 pm, Fri mostly dry Sat only slightly damp and Sun mostly dry-ish too.