Just for reference: Pretty much every 777-200ER is pretty much the same model for most intents and purposes. The 777-236ER, is one that was built for BA, with the last two digits (sometimes letters for other airlines) representing the customer code. 36 is the customer code for BA. https://en.wikipedia.org/wiki/List_o...customer_codes

So, then 777-200ER is what is really important for reference as to the seat plan. Aerolopa is great, btw for looking up the seat plans as the others above have noted.