Scaramanga do some decent stuff https://www.scaramangashop.co.uk/mens-leather-satchels-and-bags
Quality leather that ages nicely. They seem to be doing a variety of christmas sales at the moment so I'd sign up to their mailing list and keep an eye out.
I'd think that a budget of £100 is probably a little low for what you're looking for.
Scaramanga do some decent stuff https://www.scaramangashop.co.uk/mens-leather-satchels-and-bags
Quality leather that ages nicely. They seem to be doing a variety of christmas sales at the moment so I'd sign up to their mailing list and keep an eye out.
I'd think that a budget of £100 is probably a little low for what you're looking for.