Lasagne at BAR 1790 , City of London

I have been meaning to visit this place for lunch because they have specials each weekday.
The ones I wanted to try were the steak and ale pie and lasagne.
Unfortunately, it wasn't a good start as it took ages for someone to come over so I could order while food took ages to arrive.
I ordered Chef Mahdi's mum's lasagne which was really disappointing and looked nothing like their lasagne on their instagram nor a normal lasagne.
It was just a pile of ragu meat sauce and virtually no lasagne sheet.