As you must be aware the UK lost its AAA rating over the weekend. The media were all forecasting armageddon when the markets opened today.
The actuality was a 1.3% rise in the FTSE100 to 6375 - a high for the year. TechMark 100 was up 0.7%. On the currency markets the £-$ slipped 0.7% and the £-Euro was down 1%. These are within the bounds of normal trading.