Is this just for the tower or are you looking to purchase a monitor and peripherals within this budget?
If it's just the tower then something like this.....
Case
CORSAIR iCUE 220T RGB AIRFLOW MID TOWER GAMING CASE Processor (CPU)
AMD Ryzen 5 2600X Six Core CPU (3.6GHz-4.25GHz/19MB CACHE/AM4)
Get 3 Months of XBOX Game Pass for PC w/ select AMD Ryzen CPUs Motherboard
Gigabyte B450 AORUS ELITE: DDR4, USB 3.1 - RGB Ready Memory (RAM)
16GB Corsair VENGEANCE DDR4 2933MHz ~ (2 x 8GB) Graphics Card
NONE, I ALREADY HAVE A GRAPHICS CARD 1st Storage Drive
1TB SEAGATE BARRACUDA SATA-III 3.5" HDD, 6GB/s, 7200RPM, 64MB CACHE 1st M.2 SSD Drive
256GB ADATA SX6000 Pro PCIe M.2 2280 (2100 MB/R, 1200 MB/W) DVD/BLU-RAY Drive
NOT REQUIRED Power Supply
CORSAIR 550W TXm SERIES™ SEMI-MODULAR 80 PLUS® GOLD, ULTRA QUIET Power Cable
1 x 1 Metre UK Power Cable (Kettle Lead) Processor Cooling
STANDARD AMD CPU COOLER Thermal Paste
STANDARD THERMAL PASTE FOR SUFFICIENT COOLING Sound Card
ONBOARD 6 CHANNEL (5.1) HIGH DEF AUDIO (AS STANDARD) Wireless/Wired Networking
10/100/1000 GIGABIT LAN PORT (Wi-Fi NOT INCLUDED) USB/Thunderbolt Options
MIN. 2 x USB 3.0 & 2 x USB 2.0 PORTS @ BACK PANEL + MIN. 2 FRONT PORTS Operating System
Windows 10 Home 64 Bit - inc. Single Licence Operating System Language
United Kingdom - English Language Windows Recovery Media
Windows 10 Multi-Language Recovery Image - Unlimited Downloads from Online Account Office Software
FREE 30 Day Trial of Microsoft® Office® 365 (Operating System Required) Anti-Virus
BullGuard™ Internet Security - Free 90 Day License inc. Gamer Mode Browser
Microsoft® Edge (Windows 10 Only) Warranty
3 Year Silver Warranty (1 Year Collect & Return, 1 Year Parts, 3 Year Labour) Delivery
STANDARD INSURED DELIVERY TO UK MAINLAND (MON-FRI) Build Time
Standard Build - Approximately 8 to 10 working days
Price: £681.00 including VAT and Delivery
I can get a windows 10 key from work. If say i don't have to shell out cash for the OS, what improvements do you recommend. Should i go for a higher spec CPU or is there something else. Also, dont worry about a wifi card as that will not be required.
Is it purely for gaming? If it is then I would just pocket the savings. The 1060 is never going to bottle neck the 2600X. The chipset/motherboard has life in it thanks to compatibility with the latest chips and potential to be compatible with the next generation.
The only small changes I would make would be to the size of the M2 drive. It's blazingly fast but 256GB is about the minimum by todays standards. Perhaps upgrading it to 512GB or even 1TB would allow far more game storage on there.
You could (and probably should) go for an R5 3600 build for the same kind of price:
Case
CORSAIR iCUE 220T RGB AIRFLOW MID TOWER GAMING CASE Processor (CPU)
AMD Ryzen 5 3600 Six Core CPU (3.6GHz-4.2GHz/36MB CACHE/AM4)
Get 3 Months of XBOX Game Pass for PC w/ select AMD Ryzen CPUs Motherboard
ASUS® PRIME B450-PLUS (DDR4, USB 3.1, 6Gb/s) - RGB Ready! Memory (RAM)
16GB Corsair VENGEANCE DDR4 3000MHz (2 x 8GB) Graphics Card
NONE, I ALREADY HAVE A GRAPHICS CARD 1st Storage Drive
1TB SEAGATE BARRACUDA SATA-III 3.5" HDD, 6GB/s, 7200RPM, 64MB CACHE 1st M.2 SSD Drive
256GB ADATA SX6000 Pro PCIe M.2 2280 (2100 MB/R, 1200 MB/W) DVD/BLU-RAY Drive
NOT REQUIRED Power Supply
CORSAIR 550W TXm SERIES™ SEMI-MODULAR 80 PLUS® GOLD, ULTRA QUIET Power Cable
1 x 1 Metre UK Power Cable (Kettle Lead) Processor Cooling
STANDARD AMD CPU COOLER Thermal Paste
STANDARD THERMAL PASTE FOR SUFFICIENT COOLING Sound Card
ONBOARD 6 CHANNEL (5.1) HIGH DEF AUDIO (AS STANDARD) Wireless/Wired Networking
10/100/1000 GIGABIT LAN PORT (Wi-Fi NOT INCLUDED) USB/Thunderbolt Options
MIN. 2 x USB 3.0 & 2 x USB 2.0 PORTS @ BACK PANEL + MIN. 2 FRONT PORTS Operating System
Windows 10 Home 64 Bit - inc. Single Licence Operating System Language
United Kingdom - English Language Windows Recovery Media
Windows 10 Multi-Language Recovery Image - Unlimited Downloads from Online Account Office Software
FREE 30 Day Trial of Microsoft® Office® 365 (Operating System Required) Anti-Virus
BullGuard™ Internet Security - Free 90 Day License inc. Gamer Mode Browser
Microsoft® Edge (Windows 10 Only) Warranty
3 Year Silver Warranty (1 Year Collect & Return, 1 Year Parts, 3 Year Labour) Delivery
STANDARD INSURED DELIVERY TO UK MAINLAND (MON-FRI) Build Time
Standard Build - Approximately 8 to 10 working days
Price: £700.00 including VAT and Delivery
I'd say it's well worth £19 for the much better CPU.
And as above, if you don't need the Windows licence, drop it and pocket the difference. Treat yourself to a larger SSD maybe. e.g. 512gb SX6000, or 1TB WD Black (the WD Black being stupidly cheap for what it is right now)
It's also a question of PC's configurators - the Home/Office PC configurator only lets you have the B450 AORUS, which is ~£16-20 more than the B450-PLUS in the Ryzen 3000 configurator. And the B450 Plus has USB 3.1 Gen 2, unlike the AORUS. But yeah, all goes together to make it relatively inexpensive on this site