Already being a Nationwide member does not stop you, and neither does a switch bonus you have already taken. The exclusions here are written around student and graduate accounts, and none of them mention switching.

Nationwide
£100 free cash. This is credited within 14 days once you meet the criteria.
Open a FlexStudent account. Then, before 11 December 2026:
Pay in £500
Make 5 or more debit card payments
You have to be in your first year of study. Nationwide's terms rule out second years and beyond, so check this before you apply rather than after the credit search.
Already being a Nationwide member does not stop you, and neither does a switch bonus you have already taken. The exclusions here are written around student and graduate accounts, and none of them mention switching.
This does not cost you the Nationwide switch bonus, now or later. That exclusion is written around switching, and existing members are explicitly allowed to claim it. You can do both.
One catch. You cannot switch the FlexStudent account itself across to claim the switch bonus, so use a different account for that.
Switch terms change often. Check the current ones before you count on doing both.

Quick review
Wondering whether Nationwide is worth it beyond the bonus? Here is our honest take.
The UK's biggest building society, owned by its members and known for branches that aren't going anywhere. Quidsy currently has a small Nationwide offer worth a look if you're switching anyway. Suits anyone who wants a solid, branch-backed main bank rather than a digital-only setup. Just don't expect chart-topping savings rates here.
Chris' verdictYour personal guide, QuidsyNationwide is one of my favourites among the high-street names. The mutual structure means decisions tend to lean in the member's direction rather than the shareholder's, the branch network is now the biggest of any UK banking brand and is locked in until 2030, and the mobile app holds its own against the digital-only banks.
If you want a primary current account that feels solid rather than flashy, FlexDirect is a strong pick, 5% on up to £1,500 for the first year is one of the best in-credit rates around, as long as you can pay in at least £1,000 a month and you haven't held a FlexDirect before.
A few honest caveats. Nationwide rarely tops the savings tables, so if your priority is squeezing the maximum interest out of every pound, you'll probably want a separate easy-access account elsewhere alongside the current account.
The December 2025 FCA fine for old AML failings was real money and a fair black mark, even though Nationwide says no customer lost money and the controls have been rebuilt. And the Virgin Money integration that completed in April 2026 is still very fresh, the two brands are running in parallel for now, so if you bank with both, double-check your combined FSCS coverage.
There's no Nationwide sign-up bonus running through Quidsy at the moment, the £175 switch offer ended on 4 March 2026, but if Nationwide reopens a switch incentive we'll list it. For now, Nationwide is a "open it because it earns its keep" rather than a "open it for the cash" recommendation.
Nationwide Building Society is authorised by the Prudential Regulation Authority and regulated by the Financial Conduct Authority (FCA) and the Prudential Regulation Authority under registration number 106078. Eligible deposits are protected up to £120,000 by the Financial Services Compensation Scheme.
Existing Nationwide members can open one. You do not need to switch anything across to get the £100.
Online and contactless both count, so a few small everyday purchases will do it.