The deal brings the total number of active clients to over 25,000 for the Wales-based firm.
Highgrove Investments principal Malcolm Fish is to retire following the deal.
Buckles’ chief executive Nigel Spiers says: “This acquisition marks the continuation of our strategy of buying the businesses of retiring IFAs. We will look at compatible and locally based firms whose principals are seeking retirement or are thinking of leaving the industry.
“Our graduate training programme is producing a stream of highly qualified advisers, who will look after the newly acquired client base of some 400 private individuals.”