The protesters condemned Saudi Arabia and United Kingdom over war crimes and humanitarian plight in Yemen.
According to new data revealed on Friday, 310 Saudi airmen were trained in UK last year.
The protesters called on British Government to end its military agreements with Saudi Arabia and United Arab Emirates.
A 2019 United Nations report said the US, UK and France may be complicit in committing war crimes in Yemen by selling weapons and providing other support to the Saudi-led coalition which is using the deliberate starvation of civilians as a tactic of warfare.
The Saudi-led coalition’s bombing campaign has so far killed or injured an estimated 17,729 civilians as of March 2019 according to the Yemen Data Project. (ILKHA)