4G Router (mobile broadband) (Bermondsey Square SE1)

I'm looking for a 4G router (for mobile broadband) to replace a now obsolete 3G model. Preferably with Ethernet port(s) as well as Wi-fi but even a basic MiFi unit would do. I don't mind traveling a fair way to collect, as long as you are near public transport.

Thank you for reading this request.