1 current account: salary goes in monthly, all bill payments including credit card on automatic monthly direct debit. I keep a buffer of just under a month's salary and transfer excess over buffer to savings account monthly, see below.
1 credit card: bill automatically paid in full monthly. I get a modest amount of cashback, secondly it moderates my cashflow as a lot of credit card use is work travel expenses that get repaid three or four weeks later. (I do have a backup credit card that I don't use very often, also automatically paid in full monthly)
1 savings account containing emergency fund (actually have another one I don't use with same bank, all online so easiest just to leave it there). Holds 3 to 5 months of core expenses.
All with same bank (well building society actually), so all under one online account. I do all banking online apart from cash withdrawals and occasional cheque deposits from dinosaur companies and government departments (government that phased out individuals from using cheques but still sends them itself, consistency anyone?).
Pension: done automatically through employer's monthly payroll. Due to tax savings on pension contributions, particularly through "salary sacrifice" arrangement in UK where you can have tranches of money that with the tax relief (and National Insurance, and some of employer's NI savings too, for those who have any idea what NI is!), your investment is instantly doubled (though normal rate is something like £100 invested for every £67 of take home pay given up, so only a 50% boost), I put 33% of gross salary into pension. In terms of total pay+investments a month, it is equivalent to a ~25% instant pay rise, so once I worked that out I couldn't say no.
Day to day investments: once a month just after monthly salary paid I check current account, transfer about half of new salary and any spare money from previous month (varies, but my core expenses are about one third of take home salary, so often may have one sixth of salary spare from previous month) into peer-to-peer lending account. That gets automatically lent out a handful of days later. If I needed more money quickly I can cash out some of that within a few days.
Other investments: I have ISA (tax sheltered account) and investment account in one single online service. Generally don't touch those for months on end, check them more often just out of curiosity.
I do have another personal pension but it's on my to-do list to consolidate that into the online investment service.