Proofread PhD thesis

Hello,

I am looking for an experienced proofreader (whose mother language is British English and knows about academic writing at PhD level) who can proofread my thesis in a short ammount of time. It does not need too much work (only to check spelling, basic grammatical structure, and typing errors). It has 70, 000 words and I need it in 4 days. My budget is limited (150 pounds -as I am not working at the moment!). The thesis has a great amount of text in Spanish that it is not necessary to check, so the ammount of words is around 50, 000 aprox. in reality.