The client relations team has been reporting to Warman on an interim basis after the reorganisation of HML earlier this year.
His appointment now confirms his client relations role.
Warman started his career at Arthur Andersen, qualifying as a chartered accountant in 1998 before becoming a senior manager in its financial services practice.
He then joined Bear Stearns in 2001 where as managing director he helped develop the European mortgage and consumer asset desk, specialising in the UK specialist sector.
Brian Brodie, managing director of HML, says: “Our ability to extend and deepen our relationships with existing clients is key to HML’s success.
“Under Warman’s leadership, we will see client relations adopt a more proactive approach with clients to add value to their business and develop new revenue streams. I am pleased to congratulate him on this important dual role.”