The following brethren were invested with Royal Ark Mariner Grand Rank by the Pro Grand Master at the Royal Ark Mariner Grand Assembly Meeting in London on Tuesday 11th December 2018.
| Name | Lodge | Number |
|---|---|---|
| W.Bro Carl Buckley | Faith | 20 |
| W.Bro Ian M Connor | Union | 171 |
| W.Bro Steven Graham | Integrity | 1369 |
| W.Bro Andrew V Greenhalgh | Rectitude | 18TI |
| W.Bro Roy Partridge | Manchester Engineers | 1059 |