Surely with the debt load the UK has right now, one can only hope the GBP depreciates at a slow but steady rate over the next few years?

Here in Canada it's considered a disaster if the dollar rises too much too quickly. We're an export-oriented economy and a rising dollar depresses the manufacturing and extraction industries every time it happens.

You say GBP going down like it's an inherently bad thing and I can't figure why. If either CAD or the GBP started consistently appreciating over time, both countries would be in quite a lot of trouble. In fact the monetary policy and debt issuance policies assume slight depreciation.