Db mail sp not allowing embeded images with gmail

Hi I have the following SQL (running on SQL 2012 STd fully patched)

DECLARE @DatabaseName VARCHAR(256)
    DECLARE @Subject VARCHAR(256)
    DECLARE @ParamMessageID INT
    DECLARE @MessageBody NVARCHAR(MAX)
    DECLARE @Attachements NVARCHAR(MAX)
    SET @DatabaseName = DB_NAME()
    SET @Subject = 'test email at ' + CAST(GetDate() as VARCHAR(32))
    SET @MessageBody = N'hello embedded image 5' + N'<img src="logo.png" />' + ' and more text'
    SET @Attachements = N'C:\temporary\logo.png;C:\temporary\logo2.png'

    exec msdb.dbo.sp_send_dbmail @profile_name = @DatabaseName
    , @recipients = 'someone@somedomain.co.uk' 
    , @copy_recipients = '' 
    , @blind_copy_recipients = ''
    , @from_address = ''
    , @reply_to = ''
    , @subject = @Subject
    , @body = @MessageBody
    , @body_format = 'HTML'
    --[ , [ @importance = ] 'importance' ]
    --[ , [ @sensitivity = ] 'sensitivity' ]
    , @file_attachments = @Attachements --@ParamAttachments -- ";" delimited list 1 mb per file
    --[ , [ @query = ] 'query' ]
    --[ , [ @execute_query_database = ] 'execute_query_database' ]
    --[ , [ @attach_query_result_as_file = ] attach_query_result_as_file ]
    --[ , [ @query_attachment_filename = ] query_attachment_filename ]
    --[ , [ @query_result_header = ] query_result_header ]
    --[ , [ @query_result_width = ] query_result_width ]
    --[ , [ @query_result_separator = ] 'query_result_separator' ]
    --[ , [ @exclude_query_output = ] exclude_query_output ]
    --[ , [ @append_query_error = ] append_query_error ]
    --[ , [ @query_no_truncate = ] query_no_truncate ] 
    --[ , [@query_result_no_padding = ] @query_result_no_padding ] 
    , @mailitem_id = @ParamMessageID OUTPUT

    SELECT @ParamMessageID MessageID

I'm
fairly sure this worked in the past as I think I tested it and it is
very similar to examples out there. However the email I get back (via
gmail) is so:

hello embedded image 5<img src="logo.png" />  and more text 

anyone shed any light on this please?
PS The mail is sent so it is a valid profile etc

Try it with the Content-ID (CID) tag

<img src="cid:logo.png" />

I have a feeling though the way Gmail works this may not solve your issue.