No. 5 MK1- who made it? and a bayonet?

[Alan de Enfield]

It appears to be a No5 Mk1 (commonly called Jungle carbine) it was manufactured at the Fazakerly factory near Liverpool England.

Original bayonets are scarce and fetch around $200 US
There are repro bayonets out there, most are Indian copies, some fit and some dont.