Fergus B.

The UK just isn't big enough or remote enough to hide a breeding population of large primates without leaving evidence. North America has vast wilderness areas where animals can hide. The UK?

Interested in that spreadsheet data you mentioned - would you be willing to share it? I've been keeping my own records and cross-referencing would be useful.

If you're just starting, honestly get a decent torch first and learn to use it properly. Sounds daft but 90% of what people think they're seeing at night is just poor lighting and pareidolia.