We have recently carried out a refurbishment of a shop unit and put a break glass on the door frame exiting the building. The architect has asked for it to be removed and put somewhere else because it doesn't look nice, can this be done?

The only other place is 2m away from the door which would take you away from the escape exit.  

"Doesn't look nice" isn't enough justification. The other location would allow escape without passing a call point and so the system could not be certified as compliant with BS5839-1:2013 unless the location was agreed and recorded as a variation, but it would need to be agreed with all relevant parties - fire alarm engineer, risk assessor, client and Building Control (as it sounds like 'building work' under the Building Regulations has been carried out)