secondary glazing acrylic/ polycarbonate 110cm(w)x190cm(h) (Moseley B13)

Hi freeglers,
it looks like it will be a cold winter in my new room which is in an attic with no insulation and a single glazed window.. yikes.

I am after a sheetpoly carbonate or acrylic window panel. My window is 110cm(w) x 190(h)cm.

My desk will be right next to the window so I really appreciate any offers.

I live in B13 8DL moseley and would need to be within two miles because I'll need a friend to help me walk it home as I dont have a vehicle.

Thanks all.