PowerShell code to check UK NS&I Premium Bonds wins based on Holders Number

PremiumBondChecker.ps1

# PowerShell code to check UK NS&I Premium Bonds wins based on Holders Number
# URL: https://www.nsandi.com/prize-checker

# Holders Number -- Replace with your holders number (not the same as your account number)
# This number has 10 or 9 digits, or 8 digits followed by a letter. You can find your holder’s number 
# by logging in to our online service and checking your Premium Bonds account page.

$BondHoldersNumber = '83674004A' #random valid number

############
# Const
############
$Headers = @{
    # Origin  =   "https://www.nsandi.com"
    # Referer =   "https://www.nsandi.com/prize-checker"
    ContentType = "application/x-www-form-urlencoded"
} 
$URI = "https://www.nsandi.com/premium-bonds-have-i-won-ajax"

############
# This month
############
$Body = "field_premium_bond_period=this_month&field_premium_bond_number=$BondHoldersNumber"
$Results = Invoke-WebRequest -UseBasicParsing -Uri $URI -Method "POST" -Body $Body -Headers $Headers
if ($Results.StatusCode -ne 200) {
    Write-Error "Failed to retrieve results. Status code: $($Results.StatusCode)"
} else {
    $Json = $Results.Content | ConvertFrom-Json
    Write-Host $Json.tagline -ForegroundColor Green
    $Json
}

############
# 6 months
############
$Body = "field_premium_bond_period=last_six_month&field_premium_bond_number=$BondHoldersNumber"
$Results = Invoke-WebRequest -UseBasicParsing -Uri $URI -Method "POST" -Body $Body -Headers $Headers
if ($Results.StatusCode -ne 200) {
    Write-Error "Failed to retrieve results. Status code: $($Results.StatusCode)"
} else {
    $Json = $Results.Content | ConvertFrom-Json
    Write-Host $Json.tagline  -ForegroundColor Green
    $Json.history
}