Somerset house is bang on Embankment overlooking the river and this is where the very quiet back entrance is.  Its all sign-posted but you are taken on a bit on a route in a lift etc. to get there. The front entrance is far more direct, and slightly busier. 

First impressions, very small, probably about the size of your dining room at home and the eating area, the same.  Food presented in a very low-key way in baskets and on wooden boards with chalk pen labels on everything, it all looked very fresh indeed.   Very reasonable priced - £4.25 for a very fresh smoked salmon and avocado bagel, £1 - £2 for a cake/muffin,  definitely similar to Pret prices.

My disappointment was, that using the word Deli in the title gives the impressions that it is a deli? So, I was expecting nice cheeses, oils, fresh grissini to take home, olives or meat, chorizos or the best of British produce etc, you get my drift.  I really though it was a bit of a lost opportunity to up-sell those that had come in for lunch either at Tom's Kitchen or at the Deli - you could of course buy Tom Aiken books..........This sounds quite negative, don't get me wrong, the food quality was excellent, the freshest bagel I've ever eaten, melt in the mouth salmon with a zing of wasabi with the creamy avocado. 

It is off the beaten track, you certainly have to know where you are going and you need to hope its not too busy when you get there because there's not much room. But it is worth it for a nice quiet lunch spot with excellent food.