Hong Kong Cantonese variations
I don't really have much experience in this area myself but a similar question has been asked on 百度知道 before, which was answered as follows:


  香港的粤语不是最正宗的粤语. 毫无疑问,岭南文
  化中心在广州,最正宗的粤语还是在广州! 香港的
  粤语有点英语腔.
  
  香港居民说的是粤语,不过里面很多词都掺到很多
  英文.
  
  反正哪里都一样,基本也没多少差别.
  
  回答楼主,香港的粤语和广东话是一样的,只是前
  者略带英腔而己,而且话中多多少少有些英语相掺.
  
  香港本地居民说的就是粤语.


Which says: basically HK-Cantonese isn't much different from Guangdong Cantonese apart from sounding slightly like British accented Cantonese and using lots of English words.

So the changes are more accental and in loan words (or direct usage of English over Chinese) rather than appeasing the British.