There is no extra cost for UK islands.
eBay
External Storage Hard Case Bag Hard Drive Power Bank USB Cable Charger Earphone Headphone Cases for Apple MacBook
Aliexpress UK
Compatible with apple macbook pro 13" 2016 or Later Mac Book Air 2018 or Later. Works with 61W / 30W / 29W Fused UK plug. Compatible with MacBook Pro 16". High Speed Charging. COST EFFECTIVE ALTERNATIVE.
eBay
96W MacBook Charger Laptop USB-C Power Adapter For Macbook Pro M1 M2 MacBook Air A2337 A1706 Power Supply Adapter Fast Charger
Aliexpress UK
85W Only Work for Macbook Pro 15" 17" since Jun.2012. MacBook 13" 1.83/2 GHz Core Duo. MacBook 13" 1.83/2.16 GHz Core 2 Duo. Compatible Product LineFor MacBook Air, For MacBook Pro. Compatible ModelApple MacBook 85W 60W 45W L-Tip.
eBay
Power Adapter For Macbook Air Pro 45W 60W 85W Magsaf*3 2 1 Magnetic Charger A1466 Compatible with Macbook chargers Type c PD 96W
Aliexpress UK
96W Product Details Out Put (Max 96W): 20.3V/4.3A(USBPD), 9V/3A, 5.2V 2.4A. MacBook Air (M1, 2020). Model No.: A1540, A1706, A1708, A1718, A1989, A2159 (You can find Model No. on the underside of your MacBook).
eBay
45W 60W 85W Power Adapter Compatible with MacBook Charger for MacBook Air/Pro Magsafe 1 / 2 Magnetic Power Adapter Charger A1286
Aliexpress UK
Automatic identification and conversion of charging power. Input: AC 100-240V, 1.5A, 50-60Hz. Output: 20.5V/4.7A, 15V/3A, 12V/3A, 9V/3A, 5.2V/3A( Identify your devices automatically and provide the fastest and most efficient output current ).
eBay
45W 60W 85W power adapter compatible with Macbook charger for Macbook Air Pro Magsaf* 2 1 Magnetic power adapter charger A1286
Aliexpress UK
Connector type USB Type C. Included components 1 adapter, 1 USB-C power cord. High Quality & Certified Safety Protection : CE and ROHS certified for security, ensuring 100% compatibility with the original devices for peace of mind.
eBay
PD 140W USB C Charger Fast Charger Power Adapter for MacBook Pro, MacBook Air, iPad Pro, Samsung Galaxy and All USB-C Devices
Aliexpress UK
85w Adapter is suitable for. 45w Adapter is suitable for. For MacBook Pro Unibody A1286 (MacBook Pro 15" Mid 2012, Late 2011, Early 2011, Mid 2010, Mid 2009). For MacBook Pro Unibody A1297 (MacBook Pro 17" Late 2011, Mid 2010, Mid 2009).
eBay
85W Magsafe 2 T Power Adapter Compatible with MacBook Charger for MacBook Air / Pro Mag 2 T Magnetic Power Adapter Charger A1398
Aliexpress UK
It is also small,portable,fast charging and long-lasting.
eBay
45W 60W 85W Power Adapter Compatible with MacBook Charger for MacBook Air/Pro Magsafe 1 / 2 Magnetic Power Adapter Charger A1286
Aliexpress UK