I managed to do the following in about 50 minutes;
- move Volvo from in front of the garage
- move Land Rover out of Garage
- jack the land rover up and put on axle stand
- remove wheel
- disassemble brake drum etc
- remove cylinder
- loose some brake fluid on floor
- find grease and rags
- fit new cylinder
- brake drum etc back on
- wheel back on
- move Land rover back in garage without pressing brake peddle
- move Volvo back in front of garage
Job done! Well not quite, don’t have any Dot 4 so can’t bleed the brakes yet.