Atrium

We'd not been seduced by the a la carte when we snooped on a reconnaissance mission and hadn't planned on going until an offer came through 5pm.co.uk (where the sample menu only offered 2 choices for each course but they looked fabulous) so we booked.
As it happens, the actual menu offered 3 choices: an exquisite scallop/salmon terrine with passionfruit, a goats cheese roulade, and cauliflower soup; seared salmon with polenta and butternut squash, stuffed chicken leg with puy lentils, and a mushroom-based veggie alternative; pistachio creme brulee, lemon polenta cake, and cheese. What's not to like? We left the veggie choices alone and what we had was little short of magnificent. Portions decent rather than excessive.
We unearthed a Sancerre from the enormous, varied wine list. The sommelier chose the hand-to-hand combat fightin' dessert wines - a chenin blanc of some description and a treacly port-like Pedro Jimenez, not what we'd have picked but perfect. Amazing we managed the 2 minute walk home.
Service was attentive but not over-fussy. There is a 6 course+ Tasting Menu available (with or without their choice of wines) and we acquired the previous night's version to take home and study: that's our next Big Night Out! Hugely recommended.