Fear nought.
I'm willing to help get rid of your old £20 or £50 notes for you !
I'm familiar with several quiet expensive retail outlets and have hands-on experience of spend folding money like it's going outta fashion.
I also can provide a one-stop door collection for small and large bundles ( please separate your £20 and £ 50 notes into different bundles ).
leave the bundles outside your door at a pre-agreed date and they will be collected for disposal by Retail-Transaction ( R-T , copyright applied) .
You don't have to worry, it'll all be spent without you being burdened with all the effort.