At least seven people have been killed and 48 injured in the attack, which saw a van driven into pedestrians on London Bridge before three men got out and stabbed people in Borough Market. The three were shot dead by police.
“My foremost thoughts and prayers go to the loved ones of those killed in London, as well as anyone else caught up in this horrific attack,” said Mrs Long.
“My thanks also go to the emergency services, who proved once again they operate without fear or favour in dealing with the incident and its aftermath. As a mark of respect, Alliance is also suspending its General Election campaign for the next 24 hours.
“It is difficult to comprehend the mind-set of those who would carry out this terror against people simply out enjoying their weekend. Despite last night’s incident and the recent attack in Manchester, we must remain strong and continue to live our lives without fear or trepidation. By doing so, these terrorists can never win.
“London was my second home for five years – it is hugely cosmopolitan, yet made up of many bustling, friendly neighbourhood communities. Despite this horror, I know it will not lose that uniquely London aspect to its character.”