Irule Clubbing due to TCL errors.

I have combined all your irules into one:

when CLIENT_ACCEPTED {
    set static::expires [clock scan "1 year"]
}

when HTTP_REQUEST {
    set version [SSL::cipher version]
    set cipher [SSL::cipher name]
    set oldsite [HTTP::host]
    set encode [b64encode $oldsite]

     Check for less than TLSv1.2. This prevents SSLv2, SSLv3, TLSv1, and TLSv1.1 (TLSv1.0 is returned as TLSv1 by [SSL::cipher version]).

    switch -glob $version {
        "TLSv1.2" {
             do nothing
        }
        default {
             When browser cannot negotiate at least TLSv1.2
             redirect to an unencrypted page with an informational error.
             Set cache control headers to prevent proxies from caching the response.
             The cache control headers shouldn't be necessary for a 302,
             but it doesn't do any harm setting them.

            HTTP::respond 302 Location "http://y.y.y.y.com/?$encode" Cache-Control No-Cache Pragma No-Cache Connection Close
            return

             Log details of the SSL handshake and browser user-agent
             Consider using High Speed Logging instead to improve performance: https://devcentral.f5.com/wiki/iRules.hsl.ashx
            log local0. "[IP::client_addr]:[TCP::client_port]:\
               \[SSL::cipher version\]: [SSL::cipher version],\
              \[SSL::cipher name\]: [SSL::cipher name],\
              \[SSL::cipher bits\]: [SSL::cipher bits],\
              U-A: [HTTP::header User-Agent]"
        }
    }

    set http_uri [string tolower [HTTP::uri]]

    switch -glob ${http_uri} {
        "/ib/*" {
             do nothing
        }
        "/robots.txt" {
             do nothing
        }
        "/favicon.ico" {
             do nothing
        }
        "/sitecore*" } {
            HTTP::respond 301 Location "https://[HTTP::host]" Connection Close
            return
        }
        "/rsabackchannel/hbibservice.svc" {
            if { [class match [IP::client_addr] equals FynSin_IPs] } {
                 do nothing
            } else {
                HTTP::respond 301 noserver Location "https://x.x.x.x.com" Connection Close
                return
            }
        } default {
            HTTP::respond 301 noserver Location "https://x.x.x.x.com" Connection Close
            return
        }
    }
}

when HTTP_RESPONSE {
     Remove all instances of the Server header
    HTTP::header remove Server

     Remove all headers starting with x- (i.e. X-Powered-By, X-AspNet-Version, X-AspNetMvc-Version)
    foreach header_name [HTTP::header names] {
        if {[string match -nocase x-* $header_name]}{
            HTTP::header remove $header_name
        }
    }

    if { [IP::client_addr] starts_with 10. } {
         Do nothing.
    } else {
       HTTP::header insert Strict-Transport-Security "max-age=[expr {$static::expires - [clock seconds]}];"
    }
}

when CACHE_RESPONSE {
    CACHE::expire
}