Issues using 887 when authenticating with MER on a Fibre connection

Hello All
I've been battling for a week now to get the config correct for Cisco 887VA.
I understand Sky use MER to authenticate, however, in order to create the PPP connection, I am using PPPoE without passing any authentication, other than the username|password through option 61 (and vendor information on option 60).
I have Wiresharked the provided Sky router SR102 to obtain DHCP option 60 and 61 information and have entered these as hex values in the dialer interface.
I have also spoofed the SR102 MAC address on the dialer interface.
I have created a sub interface on e0, using dot1q to tag traffic to VLAN 101
I can indeed see traffic on interface e0.101 but the dialer receives NO ip address.
I can also see the modem is connected and in sync.
Am I correct in assuming the e0.101 interface is equivalent to the WAN connection on a seperate modem?
Config is below - please ignore local IPs, etc
version 15.1
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
hostname ******-ADSL
boot-start-marker
boot-end-marker
no logging buffered
enable secret 5 *********
aaa new-model
aaa authentication login default local
aaa authorization exec default local
aaa session-id common
memory-size iomem 10
clock timezone BST 0 0
clock summer-time BST recurring last Sun Mar 2:00 last Sun Oct 3:00
crypto pki token default removal timeout 0
crypto pki trustpoint TP-self-signed-1112313640
enrollment selfsigned
subject-name cn=IOS-Self-Signed-Certificate-1112313640
revocation-check none
rsakeypair TP-self-signed-1112313640
crypto pki certificate chain TP-self-signed-1112313640
certificate self-signed 01 nvram:IOS-Self-Sig#1.cer
ip source-route
ip cef
ip domain name vdsl.******.net
ip name-server 8.8.8.8
no ipv6 cef
multilink bundle-name authenticated
archive
log config
hidekeys
username admin privilege 15 secret 5 *********
controller VDSL 0
no ip ftp passive
ip ssh authentication-retries 5
ip ssh version 2
interface Ethernet0
no ip address
interface Ethernet0.101
encapsulation dot1Q 101
pppoe-client dial-pool-number 1
interface ATM0
no ip address
shutdown
no atm ilmi-keepalive
interface FastEthernet0
no ip address
interface FastEthernet1
no ip address
interface FastEthernet2
no ip address
interface FastEthernet3
no ip address
interface Vlan1
ip address 1.1.1.1 255.255.0.0
ip flow ingress
ip flow egress
ip nat inside
ip virtual-reassembly in
interface Dialer1
mac-address ****.****.**38
mtu 1492
ip dhcp client request classless-static-route
ip dhcp client client-id hex <<HEX STRING>>
ip dhcp client class-id hex <<HEX STRING>>
ip address dhcp
no ip redirects
no ip proxy-arp
ip flow ingress
ip nat outside
no ip virtual-reassembly in
encapsulation ppp
ip route-cache policy
dialer pool 1
dialer-group 1
ppp ipcp dns request accept
ppp ipcp route default
ppp ipcp address accept
no cdp enable
router ospf 1
router-id 1.1.0.1
network 1.1.0.1 0.0.0.0 area 0
default-information originate
ip forward-protocol nd
ip http server
ip http access-class 1
ip http authentication local
ip http secure-server
ip flow-cache timeout inactive 10
ip flow-cache timeout active 5
ip flow-export version 9
ip flow-export destination 1.1.1.1 9991
ip flow-export destination 1.1.1.1 9991
ip nat inside source list NATACL interface Dialer1 overload
ip access-list standard NATACL
permit 1.0.0.0 0.255.255.255
logging esm config
access-list 1 permit 1.0.0.0 0.255.255.255
dialer-list 1 protocol ip permit
control-plane
banner motd ^CCCCCCCCC
*****************AUTHORISED USERS ONLY*****************
^C
line con 0
password 7 ***************
line aux 0
password 7 ***************
line vty 0 4
session-timeout 10
exec-timeout 0 0
timeout login response 300
transport input ssh
scheduler max-task-time 5000
end
Many thanks

Chris,
Just wondering if you managed to get anywhere with this, or just gave up? I'm a Sky Fibre user, sadly using the bundled "Sky Hub" (aptly named, as I consider "Layer 1 Network Hubs" to be just as gash as this ), and have battled with the MER DHCP-based authentication before.
Previously, I was experimenting using a Cisco Linksys E2400 (or E4200, I forget) running Tomato USB Firmware and was getting frustrated with the hex settings.
I notice in your configs you posted the following strings, which look like they are trying to send the DHCP Vendor ID/Options that MER needs:
ip dhcp client client-id hex <<HEX STRING>>
ip dhcp client class-id hex <<HEX STRING>>
For your specified <<HEX STRING>> were you also appending the necessary "0x3d" (61) to your custom-generated User+Pass hex (i.e. full string reads "0x3d<<USER+PASS HEX>>")?
Sources as below, but curious if this could fix it?
Sources
http://www.skyuser.co.uk/forum/technical-discussion/46464-skys-mer-why-does-not-work-other-routers-22.html
https://www.cm9.net/skypass/index.cgi

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