Cheers!
I got some results in the search havelock investments, but how do we know that they are connected to your case?
it would be good if you could share more information. you only know part of the name and it could be anyone with the same or similar name. otherwise, green colour is most often used for branding companies that deal with money and financial services.
if you have their email, then you probably also have the domain they used then. Try searching for it in web archives and collect all the information you find, such as phone numbers, addresses, company tax IDs, contact persons, etc...