Because of the size of the screen, the subtitles are abbreviated in places.
To allow the subtitles to fit on the screen, they are sometimes abbreviated.
「画面のサイズの関係で、字幕がところどころ省略されてるんだよね」＝ Because of the size of the screen, the subtitles are abbreviated in places. / To allow the subtitles to fit on the screen, they are sometimes abbreviated.
ボキャブラリー
画面 ＝ screen
字幕 ＝ subtitles
関係で ＝ because of, due to
省略される ＝ be abbreviated
所々 ＝ in places, here and there
イギリス 
