Quilter announce this morning it has, through its wholly-owned indirect subsidiary, Intrinsic Financial Services Limited, completed the acquisition of Lighthouse.
Lighthouse shareholders approved the deal, which was worth £46.2m, last month, as reported by International Investment.
Following the completion, Malcolm Streatfield, CEO of Lighthouse, will report to Andy Thompson, CEO of Quilter's advice businesses.
Quilter and Lighthouse will be working closely on integration plans over the coming months and will update the market on progress in due course.
Andy Thompson, CEO of Quilter's advice businesses commented: "I'm delighted to welcome the clients, advisers and staff of Lighthouse to Quilter and Intrinsic. Since the announcement of our offer we've had an opportunity to work a little more closely with Lighthouse to better understand their culture, operations and model.
"We are excited to continue to grow that understanding and work together, taking the best of both businesses, to become a stronger combined business."
Malcolm Streatfield, CEO of Lighthouse, added: "This transaction is testament to the quality of what Lighthouse's staff and advisers have produced and confirmation of its value. Quilter and Intrinsic now offer us the opportunity for even greater success.
"We look forward to working hand in hand with Quilter and Intrinsic as we become one business and ensure that integration takes place at the right time for the business. We aim to keep interruption to normal business activities to an absolute minimum for clients, advisers and staff."
The transaction is expected to increase the financial adviser headcount at Intrinsic to more than 3,900.