If list of uri requested..Redirect to https and select pool

If you intend to redirect these requests to an HTTPS virtual server, then you do not need to select a pool here. The pool selection should take place in the targeted virtual server instead.

Try below options

Code-

when HTTP_REQUEST {
switch -glob [string tolower [HTTP::path]] {
    "/in/*" {
        HTTP::redirect "http://New_http_URL_1"  
    }
    "/us/*" {
        HTTP::redirect "http://New_http_URL_2"   
    }
    "/uk/*" {
        HTTP::redirect "http://New_http_URL_3"   
    }
    "/sg/*" {
        HTTP::redirect "http://New_http_URL_4"   
    }     } } 

option 2

Code
when HTTP_REQUEST {
log local0. "uri info: [HTTP::uri]"
switch -glob [string tolower [HTTP::uri]] {
    "/corp*" { pool corp }
    "/corp/" { pool corp }
"/MBSP/" { pool mbsp }
    default { pool nbqpool }
    log local0. "pool info: [LB::server pool]"
} }

you will need two VIPS one VIP for port 80 or HTTP and another VIP for the HTTPS. So in the VIP for port 80 you can put a very similar rule as the one for the pool. something like this when HTTP_REQUEST {

switch -glob [string tolower [HTTP::uri]] {

            "/en/*" { set VRedirection "true"}

            "/coxtnt/*" { set VRedirection "true"}

            "/asts/*" { set VRedirection "true"}

            "/etc/*" { set VRedirection "true"}

            "/pr/web/*" { set VRedirection "true"}

            "/libs/*" { set VRedirection "true"}

            "/ptc/*" { set VRedirection "true"}

            "/en-/" { set VRedirection "true"}

        default { set Vredirection "false" } 
}
if { $Vredirection equals "true" } then { HTTP::redirect "https://[HTTP::host][HTTP::uri]"}

}

This rule will only redirects specifics uri. Then on the HTTPS rule you can do the pool selection just like you have done