Brother,But the Thames is close to breaking its banks in Berkshire. People have been given time off work to lay sandbags.There is another geological change of which you may not be aware - that the water table under London has been rising for at least twenty years. Many buildings have had to install pumps to keep their basements dry, from the local artesian wells. This rise (I think it is about 12 feet now) will make some difference to how London copes if the Thames overflows there.
Latest news from Oxford is that people are leaving their homes while they can... wading though a foot of water in the street, and realising they don't know where it will have risen to when it peaks around lunchtime tomorrow. It's been rising since lunchtime today.