In theory, yes :)
If we had our way we'd probably only let dogs and not humans in :)
Our founder Rob has dogs and when the museum is closed and he's working on the museum his dogs are often strolling around the building, hence why you may see dog bowls and dog beds in parts of the museum.
Whilst we say "in theory" with regards to being dog friendly, the museum is made up of several small to medium sized rooms and if we had several dogs in at once it might cause an issue.
So if you come along with a dog and you're the only one with a dog in the museum then by all means your dog would be very welcome. But if we end up in a situation where we have 101 dalmations then we'd have to say no as it'd just be too manic and impractical; hope you understand! :)
The only other situation where we'd have to say "no" is if one of our volunteers with special educational needs has a particular issue with dogs. Our museum exists not only to preserve and maintain computing history, but also to provide work experience for young adults with special educational needs (SEN). If one of our volunteers who is working on a day you visit has particular sensory issues etc with regards to dogs, then we may have to say "no" or work out a way for you to avoid each other; sorry!