The Swordfish is a beauty of a kit, but remember, only 30 dollars to spend, as far a Canadian 30 dollars go, most 1/48 Tamiya is going out of reach.
If you don't mind me suggesting away from Tamiya, you might want to look at one of ICM's 1/48 Spitfire kits. Details like you wouldn't beleive straight from the box (the engine is practically a kit in itself) Aftermarket couldn't improve on them. I believe all major marks of the Spit are covered in that series. I think FSM reviewed one of those kits in the past couple of years but I'm not sure if the review is recent enough to have been archived on this site.
ICM also has a 1/48 razorback P-51 with RAF and Polish decal options. I've heard very good things said about it as well.
If you don't mind having no alignment devices molded onto the parts, these kits are great and very nice by Western standards considering the originate from an Eastern company. They easily hold their own against current Tamiya offerings and usually I see them come at a somewhat more reasonable price than Tamiya.