Britons are being warned of heavy rain which is expected to hit this weekend as the Met Office issue a yellow weather warning. Forecasters say there is a risk of flooding in some areas as heavy rain moves from the west to east of the UK. The yellow weather warning remains in place from 3pm Saturday until 6pm on Sunday. According to the Met Office, bus and train services are likely to be affected, spray and flooding may make journey times longer and flooding of a homes and businesses is likely. The Met Office said: “An area of persistent and occasionally heavy rain is expected to move from west…