My husband wants me to make beef Wellington (thank you Gordon ramsey). So I looked up a recipe which calls for 1kg of beef tenderloin... well that comes in at £85 and whilst we aren't struggling there's no way I'm spending £85 on one meal it's probably a third of our weekly food shop! So intelligent people in my phone - I'm serving for probably 4 (3 definitely will eat it and possibly 2 small portions for children) what alternative cuts/sizes of cut should I be looking for and where do I get it???