Friends Reunited - Brendan Grimshaw?

Can anyone help me contact Brendan Grimshaw, owner of Moyenne Island in the Seychelles? Margaret is a very dear friend of mine who moved from Glasgow to the Seychelles with her family around 25-30 years ago when her husband was stationed there. The family got to know Brendan very well during their years on the island and kept in touch on a regular basis. For the past two years, letters have gone unanswered which is most unusual and Margaret is keen to know if anything has happened. Although there are lots of references to Brendan and Moyenne Island on the internet, they are all dated quite some time ago and attempts to get some news have not been successful. If there is anyone who knows anything, I would be very grateful to hear from you. With thanks and best wishes, Karen Gee