I have had experience with both hospitals and their surgery departments. Lewisham day surgery and Evelina was a more severe surgery so we were there a week. Both were genuinely excellent but I found Evelina, as they are geared towards children as a whole hospital a better environment for my daughter. If I had a choice I'd pick Evelina but to have to wait 5 months longer I just don't think it's worth it and I personally would be happy to choose Lewisham. Good luck!