To properly answer that we need to know what the flight is Keith. I assume it is your gatwick to barbados flight. The best thing is to go to your booking on the VS website, update your booking, and this will show you a pictorial of the aircraft that is planned for your flight. You will be able to see if it is a 744, 343 or a 346. Armed with that info you can compare it to the seat maps
here (you can also compare the pictorials on the two sites if you are not quite sure what aircraft layout you are looking at). The seatmaps at the link above give ratings and comments on the best seats to pick.
If you are still stuck please do ask.
BTW - you seem to be getting some value from the site. Have you noticed my taglines below;);)