Loaf tin size

We have been making banana & choc-chip loaf for the past few weeks. The recipe calls for a 2lb loaf tin and as we only had a 1lb loaf tin we have been making two loafs each time. We decided to splash out on a 2lb loaf tin this week to try the recipe out properly and it turns out we have always had one (the one we thought was 1lb was in fact 2lb)

Many recipes just call for 1lb or 2lb tins without giving dimensions so for anyone else who may be as daft as we are;

2lb loaf tin = 24cm x 11cm 
1lb loaf tin = smaller (obviously) but around 15cm x 9cm