u/balabibalaboom

Hi I would like some advice of getting a shared of freehold flat in London. There are multiple blocks and 60+ flats in total. The flat has 87 years of lease left. Seems like the freehold company proposed an amendment to extend the lease to 999 years last year but no significant progress made since then. Should I walk away? I am considering to make an offer but just worried about the future risks. Appreciate any advice!