Your "old" desktop PCs or Macs for disabled people! (North Laine BN1)

Thank you for reading this posting and to all those who have donated me computers so far! I am a retired computer engineer and for about 9 months now I have been rescuing, repairing and recycling unwanted computers to people in need, especially those who are disabled, via Freegle. What I am constantly looking for is ANY machines, especially desktop models, that may be capable of running the Linux Mint operating system to some usable degree, which means Macs from around 2007 onwards, or PCs which shipped with Windows 7 or 8 and onwards. If you are worried about your data, I can offer a written guarantee of data destruction, or else to remove the hard drive from the machine and return it to you. I can collect from you within the Brighton and Hove area. I will accept machines that are not currently operating, or may be usable for parts. I can and will provide some details of the people (barring identification) whom so far I have helped, if requested.