You could also contact Hutches Rescue in Alyth. They are currently the best rescue in Scotland and get requests for companions for fallen-out or bereaved boars fairly regularly as they offer bonding at the rescue. They only rehome to good homes and never into single situations, so your boys will be in safe and experienced hands there.
https://www.theguineapigforum.co.uk/pages/guinea-pig-rescue-locator/
Otherwise, it would be best if you opened a new thread in this section here. Please be aware that the full responsibility re. home check etc. falls on you. We cannot guarantee that membership of this forum necessarily equals a safe home!
https://www.theguineapigforum.co.uk/forums/guinea-pigs-looking-for-homes.19/
