"It's not business as usual, but we're open," Mike Laven, the chief executive of London-based global payments start-up Currency Cloud, told CNBC, highlighting the mood among the country's tech companies as they prepare for life after Brexit - and a possible end to the freedoms and benefits they enjoyed in the European Union.
The immediate fallout from Britain's decision to leave the European Union (EU) was seen in the stock market turmoil and huge fall in the pound - which had an impact on some tech firms.
Money transfer start-up TransferWise suspended trading of sterling while Currency Cloud warned customers that transactions could be slower.
TransferWise said that transfers were suspended on Thursday "in anticipation of the London currency market closing overnight" to "protect customers from rate volatility". The service reopened Friday.