No bibliography is needed, but I would recommend adjusting the footnotes to oscola, especially if you are using cross-references. The preface is not included in the word count, but don't make it too long.
If you dont mind, would you please share your profile with us, i.e., which country you are from, class position, ECAs, working experience, publications etc. We could get a picture what kind of profile BCL accepts. Thank you in advance.
Sure, however, I was not applying for the BCL. I'm from Poland (but nationality is not relevant in the apps), I have a First Class degree from a non-RG British university, I had one academic prize for the best dissertation, I had little work experience at the time of applying and no publications back then either. Regardless of who gets accepted and who doesnt't, it is always worth trying :)
Thank you so much. You are very kind!