There are 7 Britannia £2 coins dated 2015 to 2022. A full set of Britannia Brilliant Uncirculated two pounds is worth about £128.
The 2015, 2016 and 2021 dated Britannia 2 pound coins entered circulation and can be found in your change. See circulation mintage for each coin in the list below.
The other 4 coins were Not Struck For Circulation (NSFC) - and were only available to purchase as part of the Royal Mint Definitive and Annual coin sets.
In your pocket, every value for every UK 50p you could find in your change and those issued as Brilliant Uncirculated only - immediate download, just £5.79.
2022 Britannia (26-22 privy mark) £2 Coin
BU
£27
Circulation Mintage: 0
BU Mintage: 11,499
2021 Britannia £2 Coin
CIRC
£2.50
BU
£9
Circulation Mintage: 6,045,000
BU Mintage: 45,070
2020 Britannia £2 Coin
BU
£10
Circulation Mintage: 0
BU Mintage: 47,192
2019 Britannia £2 Coin
BU
£16.50
Circulation Mintage: 0
BU Mintage: 45,820
2018 Britannia £2 Coin
BU
£22
Circulation Mintage: 0
BU Mintage: 43,832
2017 Britannia £2 Coin
BU
£20
Circulation Mintage: 0
BU Mintage: 49,120
2016 Britannia £2 Coin
CIRC
FV
BU
£13
Circulation Mintage: 2,925,000
BU Mintage: 38,502
2015 Britannia £2 Coin
CIRC
£3
BU
£10
Circulation Mintage: 650,000
BU Mintage: 40,882