The financial technology start-up led by Peter Randall, a co-founder of trading venue Chi-X, is almost doubling its workforce and opening a new office in the east of England.

SETL, a blockchain start-up, has recruited 10 new staff to support the company's expansion, taking the company's total to 24. The recruits include blockchain experts and specialists for server systems analysis, enterprise storage, web development, integration and project management.