Question about Megabus ex CTB bus

I will be Dec go England ,  19/12 land Livepool and 30/12 leave from London.

But I want get 1/2 trip by ex CTB 1xx service of MegaBus,
And What Megabus line service now all use ex CTB? (e.g ivepool- London)
What Line have been replace new/other bus?

And now what other city can find more ex Hong Kong bus ?

And Last this X'Mas I will stay at London, About  25/12-26/12 is No London Bus service?
How about Megabus service have stop service this 2 day?  

Thank you very much

其實如果閣下既目的純粹係為左坐城記蘭
我建議你坐Brighton-London呢條線
一日4班往返London
車程又唔算太長
不過又唔算短(車程都有成90公里長)
足夠滿足閣下
而且, 最重要既係全線用城記蘭(替車除外)
起碼唔會撲空
致於去Liverpool同Manchester既Megabus
以我觀察所得
用車大部份都係單層coach同Neoplan
不過間唔中都會有利蘭
事關我坐過兩次
另外, 以我坐過咁多次Megabus積累既經驗所得
London-Brighton呢條線既Megabus通常都會o係開車前15-20分鐘前
已經比人上車
如果閣下喜歡揀位坐
早少少到就可以了
而跑長途線好似上Liverpool同Manchester既Megabus
我發覺d司機通常都會預到汶水先比人上車
加上搭長途線既客比較多
有冇隊排, 老實講句,d乘客普遍又唔係咁守秩序喎
要揀位坐真係好難