Share Capital for an overseas company!

Hi

Can someone tell me if there are any requirements for an Overseas co having a branch in UK to issue share capital for the UK branch. Does it necessary to issue share for the UK branch.  UK branch has been registered with Co House but I could not find any share capital on the co house website. 

Shall I assume there is no requirement for the branch to issue shares?

Do the co need to file accounts with the companies house?

thanks