That must have been a real shocker to see on your washing! Don’t worry too much; it’s probably just a big bug looking for a cozy spot. If it’s a huge insect, it might be something like a hawk-moth or maybe even a beetle like a stag beetle—harmless, but surprising! They sometimes show up in gardens when it’s warm.
If you’re worried about bugs around your home, maybe give your laundry a shake before bringing it in. For peace of mind, you might want to check out
Cheap Bed Bug Treatment UK if you’re worried about critters sneaking inside. Insects like that are usually just hanging out and won’t bother you much.