Is it too late to plant...

I'm afraid it probably is.  But, to be honest, if I were you I would give it a go, especially if you can provide them with some protection eg putting a plastic sheet/cloche over them.  I always think, just go for it.  The worst you have lost are a few seed and they are pretty cheap.

I put some in last week.... for a few seeds I'm not fussed as I have got something else for next year... if we get a decent few weeks then we'll get something out of it... also put in some pak choi, assorted salady things and some baby beets... they'll get a cloche though if it gets colder... plan is to harvest toward the end of November to have some sweet pickled for Christmas.... They were freebies anyway....

chrisc

The packet of scarlet globe I have says plant up until September, so I would definitely sow some.

The ones I sowed last week are up already and growing away well