I have the domain barcalycard.co.uk and would like to monetize it if possible.

1) Is it legal to monetize this typo-based domain?!
2) How do I get a "landing page" domain parking script that is financially-based? Or is it better to put more effort in and create a financial portal? I'm looking for something easy-ish, as I'm away a lot and have very little time...

You can do what you would like with your domain, but if they take legal action, I hope you can afford it. For parking try namedrive, I think they have a few related templates.

agreed. you can do what you want with it but IF BarclayCard threaten legal action you wont have a leg to stand on. Still, if you make money via their affilite programme (and dont use the domain to refer users to competing products) you stand a better chance