About the only annual event this forum recognises other than Christmas
Track record isn't great and Matt's uncle's tips aren't in this year, I've picked a few regardless at BetVictor who do up to 6th place so hopefully will come up good:
Raz De Maree (EW) (Horse Racing Outright - Race) Odds: 40/1
Vieux Lion Rouge (EW) (Horse Racing Outright - Race) Odds: 14/1
The Last Samuri (EW) (Horse Racing Outright - Race) Odds: 20/1
Who else is in?
http://www.oddschecker.com/grand-national-betting-odds/winner <- odds table, remember generally the odds tumble as the event closes in.
Usual disclaimer stuff of don't bet more than you can afford to lose, etc