If the £1.35 ones in Paul's post did fit, they swouldn't look quite right - I think they are identical to the ones on a Land Rover.
Yes -
"Plastic lens in red, amber & clear. Replacement lenses for CL0591 complete with captive fixing screws. Direct replacement for the original equipment fitted to Land rover, the original Mini and many cars that use these ubiquitous lights. Lens Ø 67mm." 
