Plumbing and heating merchant HPS visited Great Ormond Street Hospital last week to present the hospital with a cheque for over £527,000.
The merchant has been fundraising for the hospital charity since 2005, and with the help of its customers, suppliers and staff, has now raised this staggering total for GOSH, which does amazing work caring for infants and young children.
The funds have been raised through HPS trade counters, customer entertaining events, promotions, trade shows, charity golf days, auctions, marathons and runs.
Sales Director Peter Wilson said: "We strongly feel this is a fantastic and most deserving cause and to have the opportunity to see the wonderful job the hospital and the amazing staff do is truly humbling. We look forward to redoubling our efforts and reaching our next milestone of £1,000,000 over the next few years!"