@ebfwtf when I was 35 had had precisely 0 in my pension and I didnt start contributing until I was 37. I am now 43 and have built up a good start to my pension pot that should give me a comfortable retirement and hopefully will allow me to retire early. That is based all being well, being able to contribute at same level, relativey low growth assumptions etc.
As you are in the 100k -125k bracket putting at least 25k into your pension each year is very tax efficent, if you play with some calculators it will show the real cost of your pension contribution vs loss in takehome.
My net contributions, cash I have 'sacrified' now to take out later, works out that for every 100k in the pot it has cost me 32k. The rest employers contribution (8%), less tax to pay as salary sacrifice scheme, and a lot of growth.
My pot has built up basically once I had pay rises, I now earn ever so slightly more than you, and with my employer contributions I am putting 40% contributions a month into my pot (but only this high for the last 5 months) prior to that it was 23%.
I also have a mortgage of circa 300k and I am single so noone to share bills with or pension pots when the time arrives
I would definitely have a think about;
How much would you need monthly when retired to give the lifestyle you want
What age do you want to retire
Lifestyle now vs lifestyle at retirement
And then you can consider if you want to put all excess into your pension or do you want for example an ISA pot you can access earlier for early retirement (Personally I would max out employer cont match, and get out of the 100 -125k bracket after which)
If you havent already i would also look at the funds your current pension is invested in and make sure you are happy with them. General concensus is the younger you are the more risk in the funds can be taken, as you have time to build back up / ride out market shocks. Employer pension default funds are usually a more risk averse so leaving them in the default fund can mean lower growth levels
Purely financially overpaying on the mortgage is probably not the most effective money making strategy, pension, investments would likely pro ide better returns. I understand the desire though as psychologically it has a strong pull (I can't seem to stop overpaying even though I understand that it is not the optimal strategy long term)
In short I think you are in a really good position. The fact you are looking at it now means you can make sure you have a goal, and you are saving, investing, overpaying to get you to that goal 👌