- Sainsbury's reported its busiest ever hour in terms of customers served from midday to 1pm yesterday, while 35 branches opened at midnight and will trade until 6pm today
- One million visitors were expected in London's West End during the three-day period from Saturday to today, during which over £100 million was expected to be spent
- The British Retail Consortium predicted there will have been £5 billion of retail spending over the weekend
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Two knives were found at the scene in Islington, North London, and the suspects fled on foot before being arrested.
The violence began after a counter-protester allegedly doused a female rally organiser with pepper spray.
As temperatures climb through the day, the warmest spots are likely to be across western parts of Northern Ireland and western Scotland.