Walter is a corporate finance partner based in London. His clients include public and private companies as well as a number of investment banks. On the equity capital markets side, he has worked on IPOs, secondary fundraisings and M&A transactions involving companies with operations in the UK, mainland Europe, Africa, North America and elsewhere. His ECM practice is balanced between LSE main market and AIM work. Walter works with clients across a range of industry sectors.

Chambers UK 2014 states that he well-regarded and frequently advises on IPOs and secondary fund-raisings ... sources observe that he is "extremely diligent and very thorough. He gives solid commercial advice mixed with technical excellence."

Walter contributed a chapter on "Managing directors' conflicts" to the London Stock Exchange's "Corporate Governance for Main Market and AIM Companies" published in 2012.

Admitted in Scotland and England and Wales.