Online fast fashion retailer Boohoo has posted a surge in sales along with further growth in its active customer numbers.

The etailer recorded a 41% rise in revenues to Β£58.2m in the three months to March 31, when active customer numbers climbed 30% year on year to 4.2 million.

Gross margin was down 300 basis points to 57.6% as the retailer invested in lower prices and business improvements. That fall was offset by reduced spending on marketing.

The retailer said profitability has improved as a result of the reduction in marketing costs.

Boohoo bosses now expect full-year sales growth of between 25% and 30%.

Joint chief executives Mahmud Kamani and Carol Kane said: β€œWe expect EBITDA margins in line with last year, although we will look at opportunities to drive incremental growth by investing in the customer proposition and our international markets.

β€œWe continue to execute on our strategy and refine our ecommerce platform to deliver a market-leading shopping experience for fashionable product at incredible prices.”