BA prem economy is not worth the extra money over and above economy, IMHO. As stated, the food is the same as economy, as is the now out-dated IFE. The seats are 2-4-2 on 777 and 744 and are more comfortable than economy; and if you get the bulkhead seats it can be a pleasant experience on the shorter routes, such as DXB or Doha, but I did suffer these seats for a LHR-JHB and it wasn't a great night. The CC are their usual grumpy frumpy lot who make endless PAs.
Why can't every airline be like Singapore?