Jumuah Khutbah in English

I'm stuck in a weird situation. I am studying in Birmingham city university. Alhamdulillah we have been told by our elders not to criticise people from different school of thoughts than yours. I follow Deoband school and go in tabligh jamat very often. In my university saalfi brothers are trying to take over, like they made the Islamic society majorly run by them. Problem is'nt that but the problem is that for Friday jumma from last 12 years an Imam has been coming. They asked him to not come and they (students) have started to lead the jumma. They do the juma kutba which is after second azan in both English and Arabic, like they start in Arabic a bit and mostly start speaking in English. My fist question is that is khutba like this valid, secondly I've seen them doing maasa on normal socks not the leather ones and they lead the prayer is that acceptable.