Gallery: What were the top five best and worst-performing FTSE 100 stocks of 2018?

Who won and who didn't?

The FTSE 100 experienced a tough year in 2018 with the index falling 8.7% and closing the year at 6,728 points as concerns around the Brexit negotiations and troubles on the high street plagued UK firms.

The FTSE 100 experienced a tough year in 2018 with the index falling 8.7% and closing the year at 6,728 points as concerns around the Brexit negotiations and troubles on the high street plagued UK firms. Overall, just 28 of the UK's blue-chip stocks managed to achieve positive returns over the year with a number of companies suffering major falls. In this gallery, Investment Week has put together the top five best and worst-performing funds, according to Willis Owen.