I've managed to pull the following data together about our offices nationwide, which I'm hoping you can look at in more detail. I'm keen to understand performance differences, mainly around profit margin, between our northern and southern regions. Please could you let me know how they compare? In case you haven't come across the term, profit margin is the percentage of net income compared to total revenue and is a measure of how efficiently each f of revenue is converted into profit. Regions Number of Clients Number of Employees Total Revenue Operating Expenses Net Income Manchester 96 245 E789,000 E607,530 E181,470 Northern offices Birmingham 115 301 E898,000 E727,380 E170,620 Leeds 107 289 E823,000 E625,480 (197,520 Reading 121 321 6942,000 E734,580 E207,240 More London 135 342 1987,000 $799,470 E187,530 Southern offices Bristol 112 297 E883,000 E697,570 E185,430 Cardiff 101 265 E801,000 E664,830 E136,170 Average 112 294 6874,714 E693,834 E180,854