Not too sure what more we can do though. We've replaced both external doors which used to let the breeze in, and insulated the loft. I guess we could replace all the sash windows with PVC but don't really want to do that.
That cheap 'double glazing' film you can get is really effective on draughty single glazed windows... It's a roll of double sided tape and a sheet of heat shrink clingfilm. Ideally frames painted gloss, although I've used on satin/eggshell before.
Yeah, it's pretty bad.
Not too sure what more we can do though. We've replaced both external doors which used to let the breeze in, and insulated the loft. I guess we could replace all the sash windows with PVC but don't really want to do that.