Bulb by Bradley Wind.
A vivid and engrossingread set in a richly imagined future world. The MC Ben has conjoined twin brothers, rescued by his father from a replicants program called Lazarus, and is trying to engage in an online relationship with Susan, initially to discuss books. He does volunteer work at the Saint Centre, run by a doctor Mamon, an erstwhile colleague of his father, and this drives the plot. This is interwoven with his memories of the accident which killed his father which are stored in a National Archive that he can access at any time to relive the experience. His relationships with the twins and with Lauren, his therapist/friend are well drawn and credible and although I was initially swamped by the information I needed to understand this new world I soon adapted and was carried along by the plot. It’s really gripping stuff, especially when Ben realises what is going on. Read it. 5 stars