Married my soulmate, together for 24 yrs and married for 22 yrs when he died suddenly and unexpectedly. That was 31 yrs ago and I still miss him every day but have never had another relationship (by choice).
Of course, other people were always trying to set me up with someone as they didn't think I should live alone and would never listen to what I wanted, so if they remained persistent then I just went 'no contact' as I definitely didn't want or need anyone interfering in my life.
While my DH and I did everything together we also did some things separately as well and never put any restrictions on each other. When he was dying, he asked me to promise I would get married again while apologising for ruining my life and while this was said with much thought and love, I wouldn't answer because I would not make any promise that deep in my heart I didn't expect I would keep...and he knew it too!
Naturally we were both devastated because we had great plans but I got on with my solo life and have no desire to change. I continued to travel, go to concerts, dinner, holidays, etc all can be arranged at short notice when you only have yourself to get organised. Also, I've met some great people while travelling solo and been invited to extend a trip with them and vice versa.
To think that London, or anywhere else for that matter, does not belong to any one demographic